Eyewear having multiple ventilation states

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit under 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 61/696,008, filed Aug. 31, 2012, and titled “EYEWEAR HAVING MULTIPLE VENTILATION STATES,” the entirety of which is hereby incorporated by reference and made a part of this specification for all that it discloses.

BACKGROUND

1. Field of the Disclosure

This disclosure relates to vented eyewear, and more specifically to eyewear having multiple ventilation states that produce different levels of ventilation.

2. Description of the Related Art

A wide variety of eyewear products are available. Some eyewear products suffer from various drawbacks, such as insufficient ventilation, insufficient protection (e.g., at lateral portions of the eyewear), insufficient ballistic impact resistance, etc. The embodiments disclosed herein address some of these drawbacks.

SUMMARY OF CERTAIN EMBODIMENTS

Various embodiments disclosed herein relate to eyewear that includes a lens and a frame that is configured to support the lens in a field of view of a wearer. The eyewear can include a gasket attached to the frame, and the gasket can include a flange configured to conform to the face of the wearer. The gasket can be movable relative to the frame between a closed position and an open position, and the open position provides more ventilation through the eyewear than the closed position.

In some embodiments, the lens does not move relative to the frame when the gasket is transitioned between the closed position and the open position.

The gasket can be movable relative to the frame to one or more intermediate positions that provide more ventilation than the closed position and less ventilation than the open position.

In some embodiments, the frame can include a pair of ear stems.

The gasket can be removably attached to the frame. The lens and frame can be configured to be wearable without the gasket (e.g., in a reduced protective configuration). In some embodiments, the gasket can be removably attachable to the lens (or lenses) of the eyewear. For example, the gasket can have a subframe that is configured to engage the lens (or lenses) of the eyewear.

The gasket can include a subframe configured to abut against the frame when the gasket is in the closed position. In some embodiments, the subframe can be configured to deform when the gasket is in the open position, and the deformation of the subframe can be configured to increase the ventilation through the eyewear as compared to an undeformed configuration of the subframe. In some embodiments, the subframe can be substantially rigid, and the subframe can be configured to pivot about a nose portion between the open position and the closed position.

Various embodiments disclosed herein relate to eyewear that includes a lens and a frame configured to support the lens in a field of view of a wearer. The eyewear can include a gasket that is removably attachable to the frame. In some embodiments, the gasket can be removably attachable to the lens (or lenses) of the eyewear. The gasket can include a flange configured to conform to the face of the wearer.

In various embodiments, the lens and frame can be configured to be wearable with the gasket in a protective configuration having a low level of ventilation, and the lens and frame can be configured to be wearable without the gasket in a reduced protective configuration having a high level of ventilation.

The gasket can include a gasket retention member configured to removably attach the gasket to the frame. The gasket retention member can include a grippable portion positioned at the top of the gasket. In some embodiments, the grippable portion and gasket retention member can provide a quick release that allows the gasket to be removed from the frame while the frame is being worn, without removal of the eyewear from the wearer's face. The gasket retention member can include a clip configured to engage a bridge portion of the frame. In some embodiments, the grippable portion can extend forward past the front end of the frame.

Various embodiments disclosed herein relate to eyewear that includes a lens having a front surface and a back surface and a frame configured to support the lens in a field of view of a wearer. The eyewear can include a gasket having a subframe that includes a front side and a back side. The gasket can include a flange on the back side of the subframe, and the flange can be configured to conform to the face of the wearer. The gasket can include a front seal on the front side of the subframe, and the front seal can be configured to abut against the back surface of the lens.

In some embodiments, the front seal can be attached to the flange. In some embodiments, the flange and the front seal can be integrally formed. The subframe can include one or more holes extending from the front side of the subframe to the back side of the subframe. A material can extend through the one or more holes to interconnect the flange to the front seal. In some embodiments, a material can extend around the outside of at least a portion of the subframe to interconnect the flange to the front seal.

In some embodiments, the gasket can be configured to allow ventilation through the eyewear. For example, the front seal can include one or more vent gaps that provide ventilation. In some embodiments, the flange can include one or more vent gaps that provide ventilation. In some embodiments, the subframe can include one or more vent gaps that provide ventilation. In some embodiments, the gasket can include a porous material that provides ventilation.

The gasket can include a gasket retention member configured to removably attach the gasket to the frame. The gasket retention member can include a grippable portion positioned at the top of the gasket, and the gasket can be configured to be removable from the frame while the frame is worn. In some embodiments, the lens and frame can be configured to be wearable without the gasket.

Various embodiments disclosed herein relate to eyewear that includes a lens and a frame configured to support the lens in a field of view of a wearer. The lens can be movable with respect to the frame between a closed position and an open position, and the open position can provide more ventilation through the eyewear than the closed position. The eyewear can include a lens retaining member configured to toggle the lens between the closed position and the open position, and the lens retaining member can be configured to retain the lens in the closed position in the event of a lens impact event.

The lens retaining member can include a front arm positioned forward of the lens when in the closed position and one or more positioning features that can be configured to engage one or more corresponding features on the frame to retain the lens in the closed position. The front arm can be coupled to the one or more positioning features at a junction that is rearward of the one or more corresponding features on the frame such that a force applied to the front arm by an impact on the lens is transferred to the one or more positioning features through the junction to prevent disengagement of the one or more positioning features from the one or more corresponding features on the frame. In some embodiments, the positioning features can be positioned on a front side of the lens retaining member, and the juncture can be on a back side of the lens retaining member.

Various embodiments disclosed herein relate to eyewear having a lens and a frame configured to support the lens in a field of view of a wearer. The lens can be movable with respect to the frame between a closed position and an open position, and the open position can provide more ventilation through the eyewear than the closed position. The frame can have a nose portion. The lens in the open position can be spaced apart from the nose portion of the frame such that a linear line can be drawn from a location outside the eyewear, between the nose portion and the lens, and to a location inside the eyewear that is rearward of the frame. The eyewear can include at least one ridge disposed between the nose portion of the frame and the lens such that the at least one ridge intersects the linear line. In some embodiments, all of one or more openings between the lens and the nose portion of the frame through which a linear line extends from a location outside the eyewear to a location inside the eyewear and rearward of the frame can have a width of about 1.5 mm or less.

Various embodiments disclosed herein relate to eyewear that includes a lens comprising one or more tabs and a frame configured to support the lens in a field of view of a wearer. The lens can be movable with respect to the frame between a closed position and an open position, and the open position can provide more ventilation through the eyewear than the closed position. The frame can include one or more grooves configured to receive the one or more tabs therein. The grooves and tabs can be configured to cause the lens to deform when in the open position, and the deformation of the lens can increase ventilation in the eyewear as compared to an undeformed configuration of the lens.

Various embodiments disclosed herein can relate to an eyewear attachment that can include a subframe and a flexible flange extending rearward from the subframe. The flexible flange can be configured to rest against and conform to the face of a wearer. The eyewear attachment can include a retention member configured to removably attach the eyewear attachment to eyewear. The retention member can include a grip for releasing the eyewear attachment from the eyewear, the grip positioned at a top of the eyewear attachment.

In some embodiments, the eyewear attachment can be used with eyewear that includes a lens and a frame configured to support the lens in a field of view of a wearer. The eyewear attachment can be removably coupled to the eyewear, and the lens and frame can be configured to be wearable without the eyewear attachment. The eyewear attachment can be removably coupled to a portion of the frame that is disposed proximate a top periphery of the lens. In some embodiments, the eyewear attachment is removably coupled to an engagement portion of the frame, and the grip can extend forward past the engagement portion of the frame.

In some embodiments, the retention member can include a clip configured to engage a bridge portion of the eyewear. The grip can extend forward past the clip. The eyewear attachment can be configured to be removable from the eyewear while the eyewear is being worn. The eyewear attachment can include a nose piece engagement member that is configured to engage a nose piece on the eyewear.

Various embodiments disclosed herein can relate to an eyewear attachment that includes a subframe having a front side and a back side, a retention member configured to removably couple the subframe to eyewear, a flexible flange on the back side of the subframe, where the flexible flange is configured to rest against and conform to the face of the wearer, and a front element on the front side of the subframe. The front element can be configured to abut against a back surface of a lens of the eyewear.

The eyewear attachment can be used with eyewear that includes a lens and a frame. The frame can be configured to support the lens in a field of view of a wearer. The eyewear attachment can be removably coupled to the eyewear. The lens and frame can be configured to be wearable without the eyewear attachment. The eyewear attachment can be removably coupled to the frame.

The front element can be a front seal that includes a flexible material that is configured to seal against at least a portion of the back surface of the eyewear lens. The front element can be attached to the flexible flange. The flexible flange and the front element can be integrally formed of the same material. The subframe can include one or more holes extending from the front side of the subframe to the back side of the subframe, and a material can extend through the one or more holes to interconnect the flexible flange to the front element. A material can extend around the outside of at least a portion of the subframe to interconnect the flexible flange to the front element. In some embodiments, the eyewear attachment can be configured to allow ventilation through the eyewear. For example, at least one of the front element, the flexible flange, and the subframe can include a porous material and/or vent gaps that provide ventilation.

The retention member can include a grip positioned at the top of the eyewear attachment, and in some embodiments, the eyewear attachment can be configured to be removable from the eyewear while the eyewear is worn.

The flexible flange can include a right orbital and a left orbital. The right orbital can be configured to at least partially seal around the wearer's right eye, and the left orbital can be configured to at least partially seal around the wearer's left eye. The enclosed volume inside the right orbital can be separated from an enclosed volume inside the left orbital to impede exchange of air between the enclosed volumes inside the right and left orbitals.

Various embodiments disclosed herein can relate to a method of removing an eyewear attachment. The method can include wearing eyewear and an eyewear attachment. The eyewear can include a lens and a frame supporting the lens in a field of view of a wearer. The eyewear attachment can include a subframe, a flexible flange conforming to the face of the wearer, and a retention member removably coupling the subframe to the eyewear. The retention member can include a grip disposed at a top of the eyewear attachment. The method can include pulling generally upwardly on the grip to disengage the retention member from the eyewear and to remove the eyewear attachment from the eyewear while the frame and lens are being worn.

Various embodiments disclosed herein can relate to eyewear that includes a lens, a frame configured to support the lens in a field of view of a wearer, and a lens retaining member coupled to a brow portion of the frame. The lens retaining member can be rotatable between a closed position and an open position. The closed position of the lens retaining member can retain the lens on the frame in a closed configuration such that the lens is in the field of view of the wearer. The open position of the lens retaining member can retain the lens on the frame in an open configuration such that the lens is in the field of view of the wearer. The open configuration of the lens can provide more ventilation through the eyewear than the closed configuration of the lens.

The lens retaining member can include a back arm disposed rearward of the lens and configured to push the lens to the open configuration when the lens retaining member is moved to the open position. The lens retaining member can include a front arm disposed forward of the lens and configured to push the lens to the closed configuration when the lens retaining member is moved to the closed position. The lens retaining member can include one or more positioning features configured to engage one or more corresponding features on the frame to maintain the lens retaining member in the closed position.

The eyewear can be a goggle that includes a flexible flange configured to rest against and conform to the face of the wearer. In some embodiments, the lens can substantially seal against the frame when the lens is in the closed configuration. The lens can include one or more tabs, and the frame can include one or more grooves configured to receive the one or more tabs therein. The tabs can slide within the grooves when the lens moves between the closed configuration and the open configuration. The frame can include a first lateral side and a second lateral side, and the brow portion can extend between the first and second lateral sides. In some embodiments, the lens retaining member can be substantially centered on the brow portion of the frame.

Various embodiments disclosed herein can relate to eyewear that includes a lens and a frame configured to support the lens in a field of view of a wearer. The lens can be movable with respect to the frame between a closed position and an open position. The lens can be configured to be in the field of view of the wearer when in the open position and when in the closed position. The open position can provide more ventilation through the eyewear than the closed position. A lens retaining member can be configured to toggle the lens between the closed position and the open position. The lens retaining member can be rotatable between a first position associated with the closed position of the lens and a second position associated with the open position of the lens. The lens retaining member can be configured to impede the lens from moving from the closed position to the open position in response to a force pushing the lens toward the open position.

The lens retaining member can include a front arm positioned forward of the lens when the lens is in the closed position, and the lens can apply a force on the front arm when the lens is pushed toward the open position. The lens retaining member can include one or more positioning features on a first side of the lens retaining member, and the one or more positioning features can be configured to engage one or more corresponding features on the frame when the lens is in the closed position. The front arm can be coupled to the one or more positioning features at a junction on a second side of the lens retaining member such that the force applied to the front arm by the lens imparts a force on to the one or more positioning features in a direction that further secures the lens in the closed position.

In some embodiments, the second side of the lens retaining member can be substantially opposite the first side of the lens retaining member. The one or more positioning features can be on a front side of the lens retaining member, and the junction can be on a back side of the lens retaining member. The one or more positioning features can include hooks. The one or more corresponding features on the frame can include teeth.

In some embodiments, the lens retaining member can include one or more positioning features configured to engage one or more corresponding features on the frame when the lens is in the closed position. The lens retaining member can include a locking element that can be configured such that the force that pushes the lens toward the open position causes the locking element to press against the one or more positioning features to impede the one or more positioning features from disengaging from the one or more corresponding features on the frame so as to impede the lens from moving from the closed position to the open position.

The lens retaining member can include a front arm positioned forward of the lens when the lens is in the closed position, and the locking element can be disposed on a front side of the front arm.

In some embodiments, the lens retaining member can be movable between the first position associated with the closed position of the lens, the second position associated with the open position of the lens, and a releasing position configured to enable the lens to be removed from the frame.

Various embodiments disclosed herein can relate to eyewear that includes a lens and a frame that has a nose portion. The frame can be configured to support the lens in a field of view of a wearer. The lens can be movable with respect to the frame between a closed position and an open position, and the open position can provide more ventilation through the eyewear than the closed position. The lens in the open position can be spaced apart from the nose portion of the frame such that a linear line extends from a location outside the eyewear, between the nose portion and the lens, and to a location inside the eyewear that is rearward of the frame. At least one ridge can be disposed between the nose portion of the frame and the lens and the at least one ridge can intersect the linear line.

The at least one ridge can be configured such that, when the lens is in the open position, all of one or more openings between the lens and the nose portion of the frame through which a linear line extends from a location outside the eyewear to a location inside the eyewear and rearward of the frame have a width of about 1.5 mm or less. The nose portion can include one or more openings extending through the nose portion and configured to increase ventilation through the eyewear when the lens is in the open position. The nose portion can include a plurality of ridges and the one or more openings can be disposed between the plurality of ridges.

The brow portion of the frame can include a plurality of openings. The plurality of openings in the brow portion can be in communication with the inside of the eyewear to provide ventilation when the lens is in the open position, and in some embodiments, the plurality of openings in the brow portion are not in communication with the inside of the eyewear when the lens is in the closed position.

Various embodiments disclosed herein can relate to an eyewear attachment for coupling to eyewear. The eyewear attachment can include a subframe and a flexible flange extending rearward from the subframe. The flexible flange can be configured to rest against and conform to the face of a wearer. The eyewear attachment can include an engagement member extending forward from the subframe and a retention member configured to couple to a frame of the eyewear. The engagement member can engage the retention member such that the eyewear attachment is configured to be disposed between the face of the wearer and the eyewear frame. The engagement member can be engageable with the retention member at a first location for positioning the eyewear attachment in an open position and a second location for positioning the eyewear attachment in a closed position. The open position is configured to provide more ventilation through the eyewear than the closed position.

The eyewear attachment can be used with eyewear that includes a lens and a frame configured to support the lens in a field of view of a wearer. The eyewear attachment can be coupled to the frame. The retention member can be removably coupled to the frame, and the lens and the frame can be configured to be wearable without the eyewear attachment. In some embodiments, the lens does not move relative to the frame when the eyewear attachment is moved between the closed position and the open position.

In some embodiments, the subframe can be configured to deform when the eyewear attachment is in the open position, and the deformation of the subframe can be configured to increase the ventilation through the eyewear as compared to an undeformed configuration of the subframe. The subframe can be configured to abut against the frame when the eyewear attachment is in the closed position. The eyewear attachment can be configured to be movable relative to the frame to one or more intermediate positions that provide more ventilation than the closed position and less ventilation than the open position.

Various embodiments disclosed herein can relate to an eyewear attachment for use with eyewear. The eyewear attachment can include a flexible flange configured to rest against and conform to the face of a wearer and an engagement member coupled to the flexible flange and configured to couple the eyewear attachment to an eyewear frame in a closed position and in an open position. The flexible flange can be configured to move relative to the frame between the closed position and the open position, and the open position can be configured to provide more ventilation through the eyewear than the closed position.

The eyewear attachment can be used with eyewear that includes a lens and a frame configured to support the lens in a field of view of a wearer. The eyewear attachment can be coupled to the frame. In some embodiments, the lens does not move relative to the frame when the eyewear attachment is moved between the closed position and the open position. The frame can include a pair of ear stems and a brow portion extending between the pair of ear stems. The engagement member can couple the eyewear attachment to the brow portion of the frame. The engagement member can be substantially centered on the brow portion of the frame.

The eyewear attachment can be removably coupled to the frame. The lens and the frame can be configured to be wearable without the eyewear attachment. The eyewear can be configured to substantially seal against the wearer's face when the eyewear attachment is in the closed position. The eyewear attachment can be configured to be movable relative to the eyewear frame to one or more intermediate positions that provide more ventilation than the closed position and less ventilation than the open position.

The eyewear attachment can include a subframe. The subframe can be configured to abut against the eyewear frame when the eyewear attachment is in the closed position. The subframe can be configured to deform when the eyewear attachment is in the open position, and the deformation of the subframe can be configured to increase the ventilation through the eyewear as compared to an undeformed configuration of the subframe. The eyewear attachment can be configured to remain attached to a nose portion of the eyewear frame when the eyewear attachment moves from the closed position to the open position.

The eyewear attachment can include a retention member that can be configured to couple to the frame. The flexible flange and engagement member can be movably coupled to the retention member. The engagement member can include one or more slots having one or more detents that separate the one or more slots into a first portion and a second portion. The retention member can include one or more prongs configured to engage the one or more slots. The prongs can be positioned in the first portion of the one or more slots when the flexible flange is in the closed position, and the prongs can be positioned in the second portion of the one or more slots when the flexible flange is in the first position. The retention member can be configured to removably couple to the eyewear frame. The retention member can be configured to couple to a brow portion of the eyewear frame, and the engagement member can be positioned on a brow portion of the eyewear attachment.

Various embodiments disclosed herein can relate to a method of ventilating eyewear. The method can include wearing eyewear and an eyewear attachment. The eyewear can include a lens and a frame supporting the lens in a field of view of a wearer. The eyewear attachment can include a retention member coupled to the frame, a subframe, a flexible flange conforming to the face of the wearer, and an engagement member with an arm extending forward from the subframe. The engagement member can engage the retention member to couple the eyewear attachment to the frame. The eyewear attachment can be in a closed position. The method can include pressing the arm rearward to move the eyewear attachment relative to the frame to an open position. The open position can provide more ventilation through the eyewear than the closed position.

In some embodiments, the lens does not move relative to the frame when the eyewear attachment is moved between the closed position and the open position. In some embodiments, the flexible flange remains in contact with the wearer's face as the eyewear attachment moves relative to the frame to the open position, and the frame moves away from the wearer's face as the eyewear attachment moves relative to the frame to the open position.

BRIEF DESCRIPTION OF THE DRAWINGS

The abovementioned and other features of the embodiments disclosed herein are described below with reference to the following drawings. The drawings are intended to illustrate example embodiments, and do not limit the inventions. The drawings contain the following Figures:

<figref idref="DRAWINGS">FIG. 1</figref> is an isometric view of an example embodiment of eyewear.

<figref idref="DRAWINGS">FIG. 2</figref> is an exploded isometric view of the eyewear of <figref idref="DRAWINGS">FIG. 2</figref>.

<figref idref="DRAWINGS">FIG. 3</figref> is an isometric view of an example embodiment of a gasket retention member.

<figref idref="DRAWINGS">FIG. 4</figref> shows the underside of the gasket retention member of <figref idref="DRAWINGS">FIG. 3</figref>.

<figref idref="DRAWINGS">FIG. 5</figref> shows an isometric view of the gasket retention member attached to the frame of the eyewear.

<figref idref="DRAWINGS">FIG. 6</figref> is a back view of the gasket retention member attached to the frame of the eyewear.

<figref idref="DRAWINGS">FIG. 7</figref> shows a top view an example embodiment of a gasket.

<figref idref="DRAWINGS">FIG. 8</figref> shows a side view of the gasket of <figref idref="DRAWINGS">FIG. 7</figref>.

<figref idref="DRAWINGS">FIG. 9</figref> shows an exploded isometric view of the gasket of <figref idref="DRAWINGS">FIG. 7</figref>

<figref idref="DRAWINGS">FIG. 10</figref> shows another exploded isometric view of the gasket of <figref idref="DRAWINGS">FIG. 7</figref>.

<figref idref="DRAWINGS">FIG. 11</figref> shows the eyewear in a closed configuration.

<figref idref="DRAWINGS">FIG. 12</figref> shows the eyewear in an open configuration.

<figref idref="DRAWINGS">FIG. 13</figref> shows a cross-sectional view of the eyewear in the closed configuration of <figref idref="DRAWINGS">FIG. 11</figref>.

<figref idref="DRAWINGS">FIG. 14A</figref> shows a cross-sectional view of the eyewear in the open configuration of <figref idref="DRAWINGS">FIG. 12</figref>.

<figref idref="DRAWINGS">FIG. 14B</figref> shows a cross-sectional view of an example embodiment of eyewear configured to provide filtered ventilation.

<figref idref="DRAWINGS">FIG. 15A</figref> shows an isometric view of an example embodiment of eyewear.

<figref idref="DRAWINGS">FIG. 15B</figref> shows an exploded isometric view of the eyewear of <figref idref="DRAWINGS">FIG. 15A</figref>.

<figref idref="DRAWINGS">FIG. 15C</figref> is an isometric view of an example embodiment of a gasket retention member.

<figref idref="DRAWINGS">FIG. 15D</figref> shows the gasket retention member of <figref idref="DRAWINGS">FIG. 15C</figref> attached to the frame of the eyewear.

<figref idref="DRAWINGS">FIG. 15E</figref> shows a side view of an example embodiment of a gasket.

<figref idref="DRAWINGS">FIG. 15F</figref> shows an isometric view of a gasket attachment member on the gasket of <figref idref="DRAWINGS">FIG. 15E</figref>.

<figref idref="DRAWINGS">FIG. 15G</figref> shows an exploded isometric view of the gasket of <figref idref="DRAWINGS">FIG. 7</figref>.

<figref idref="DRAWINGS">FIG. 15H</figref> shows the eyewear in a closed configuration.

<figref idref="DRAWINGS">FIG. 15I</figref> shows the eyewear in an open configuration.

<figref idref="DRAWINGS">FIG. 16</figref> is an isometric view of an example embodiment of eyewear, which can be a goggle.

<figref idref="DRAWINGS">FIG. 17</figref> is an exploded isometric view of the goggle of <figref idref="DRAWINGS">FIG. 16</figref>.

<figref idref="DRAWINGS">FIG. 18</figref> is another exploded isometric view of the goggle.

<figref idref="DRAWINGS">FIG. 19</figref> is an isometric view of an example embodiment of a lens retaining member.

<figref idref="DRAWINGS">FIG. 20</figref> is another view of the lens retaining member.

<figref idref="DRAWINGS">FIG. 21</figref> shows an engagement portion of the frame of the goggle.

<figref idref="DRAWINGS">FIG. 22</figref> is a cross-sectional view of the goggle.

<figref idref="DRAWINGS">FIG. 23A</figref> is a cross-sectional view of the lens retaining member in a closed position.

<figref idref="DRAWINGS">FIG. 23B</figref> is a cross-sectional view of the lens retaining member in an open position.

<figref idref="DRAWINGS">FIG. 23C</figref> is a cross-sectional view of the lens retaining member in a releasing position.

<figref idref="DRAWINGS">FIG. 24</figref> is a cross-sectional view of another embodiment of a lens retaining member in a closed position.

<figref idref="DRAWINGS">FIG. 25</figref> is a cross-sectional view of the lens retaining member of <figref idref="DRAWINGS">FIG. 24</figref> in an open position.

<figref idref="DRAWINGS">FIG. 26</figref> is a side view of the goggle in the closed configuration.

<figref idref="DRAWINGS">FIG. 27</figref> is a cross-sectional view of the goggle in the closed configuration.

<figref idref="DRAWINGS">FIG. 28</figref> is a side view of the goggle in the open configuration.

<figref idref="DRAWINGS">FIG. 29</figref> is a cross-sectional view of the goggle in the open configuration

<figref idref="DRAWINGS">FIG. 30</figref> shows a detailed isometric view of a groove in the frame of the goggle.

<figref idref="DRAWINGS">FIG. 31</figref> shows a detailed isometric view of the nose portion of the frame.

<figref idref="DRAWINGS">FIG. 32</figref> shows a cross-sectional view of the nose portion of the frame and the lens in an open configuration.

<figref idref="DRAWINGS">FIG. 33</figref> shows a cross-sectional view with an opening between the lens and frame through which a linear line can be drawn from a location outside the goggle to a location inside the goggle.

<figref idref="DRAWINGS">FIG. 34</figref> shows a perspective view of the goggle.

<figref idref="DRAWINGS">FIG. 35</figref> shows a detailed view of the nose portion of the goggle as shown in <figref idref="DRAWINGS">FIG. 34</figref>.

<figref idref="DRAWINGS">FIG. 36</figref> shows a detailed view of the nose portion of the goggle with the ridges on the nose portion omitted from view.

<figref idref="DRAWINGS">FIG. 37</figref> shows a side view of the goggle in the releasing configuration.

<figref idref="DRAWINGS">FIG. 38</figref> shows a cross-sectional view of the goggle in the releasing configuration.

<figref idref="DRAWINGS">FIG. 39</figref> shows the lens retaining member with a junction positioned on the front side thereof.

<figref idref="DRAWINGS">FIG. 40A</figref> shows the lens retaining member with the junction positioned at the back side thereof.

<figref idref="DRAWINGS">FIG. 40B</figref> is a front perspective view of an example embodiment of eyewear, which can be a goggle.

<figref idref="DRAWINGS">FIG. 40C</figref> is a rear perspective view of the goggle of <figref idref="DRAWINGS">FIG. 40B</figref>.

<figref idref="DRAWINGS">FIG. 40D</figref> is an exploded perspective view of the goggle of <figref idref="DRAWINGS">FIG. 40B</figref>.

<figref idref="DRAWINGS">FIG. 40E</figref> is an exploded view of an example embodiment of a frame for use with the goggle of <figref idref="DRAWINGS">FIG. 40B</figref>.

<figref idref="DRAWINGS">FIG. 40F</figref> is a partial view of frame showing an engagement portion of the frame.

<figref idref="DRAWINGS">FIG. 40G</figref> is a perspective view of an example embodiment of a lens retaining member for use with the goggle of <figref idref="DRAWINGS">FIG. 40B</figref>.

<figref idref="DRAWINGS">FIG. 40H</figref> is a side view of the lens retaining member of <figref idref="DRAWINGS">FIG. 40G</figref>.

<figref idref="DRAWINGS">FIG. 40I</figref> is a partial front view of the frame.

<figref idref="DRAWINGS">FIG. 40J</figref> is a cross-sectional view of an example embodiment of eyewear that provides filtered ventilation.

<figref idref="DRAWINGS">FIG. 40K</figref> is a cross-sectional view of an example embodiment of eyewear that provides filtered ventilation.

<figref idref="DRAWINGS">FIG. 41</figref> is a front perspective view of an example embodiment of eyewear that includes a removable gasket.

<figref idref="DRAWINGS">FIG. 42</figref> shows an exploded front perspective view of the eyewear of <figref idref="DRAWINGS">FIG. 41</figref>, in which the gasket is disengaged from the eyeglass.

<figref idref="DRAWINGS">FIG. 43</figref> is a rear perspective view of the eyewear of <figref idref="DRAWINGS">FIG. 41</figref>, in which the gasket is attached to the eyeglass.

<figref idref="DRAWINGS">FIG. 44</figref> is an exploded rear perspective view of the eyewear of <figref idref="DRAWINGS">FIG. 41</figref>, in which the gasket is disengaged from the eyeglass.

<figref idref="DRAWINGS">FIG. 45</figref> is a front view of the gasket.

<figref idref="DRAWINGS">FIG. 46</figref> is a side view of the gasket.

<figref idref="DRAWINGS">FIG. 47</figref> is a side view of the eyewear with the gasket attached to the eyeglass.

<figref idref="DRAWINGS">FIG. 48</figref> is a perspective view of the nose piece of the eyewear of <figref idref="DRAWINGS">FIG. 41</figref>.

<figref idref="DRAWINGS">FIG. 49</figref> is an exploded perspective view of the nose piece of <figref idref="DRAWINGS">FIG. 48</figref>.

<figref idref="DRAWINGS">FIG. 50</figref> is an exploded perspective view of an example embodiment of a gasket for use with the eyewear of <figref idref="DRAWINGS">FIG. 41</figref>.

<figref idref="DRAWINGS">FIG. 51</figref> is a partial cross-sectional view of the gasket of <figref idref="DRAWINGS">FIG. 50</figref>.

<figref idref="DRAWINGS">FIG. 52</figref> is a partial cross-sectional view of another example embodiment of a gasket.

<figref idref="DRAWINGS">FIG. 53</figref> is a front view of an example embodiment of a gasket having gaps configured to provide ventilation for the eyewear.

<figref idref="DRAWINGS">FIG. 54</figref> is a detailed partial front view of the gasket of <figref idref="DRAWINGS">FIG. 53</figref>.

<figref idref="DRAWINGS">FIG. 55</figref> is a partial perspective view of eyewear that includes a leash.

DETAILED DESCRIPTION OF CERTAIN EMBODIMENTS

While the present description sets forth specific details of various embodiments, it will be appreciated that the description is illustrative only and should not be construed in any way as limiting. Additionally, although particular embodiments may be disclosed or shown in the context of unitary lens eyewear systems, dual lens eyewear systems can also be used. Further, although embodiments disclosed herein can be used with eyeglasses that have removable and replaceable lenses, embodiments are also contemplated in which the eyeglasses are not intended to provide for removable or replaceable lenses.

<figref idref="DRAWINGS">FIG. 1</figref> shows an isometric view of an example embodiment of eyewear <b>100</b>. <figref idref="DRAWINGS">FIG. 2</figref> is an exploded isometric view of the eyewear <b>100</b>. Various features of the eyewear <b>100</b> can be similar to, or the same as, the other eyewear embodiments disclosed herein. The eyewear <b>100</b> can include an eyeglass <b>102</b>, a gasket <b>104</b> (also referred to herein as an eyewear attachment), and a gasket retention member <b>106</b>. The gasket <b>104</b> can be removably attached to the eyeglass <b>102</b> to convert the eyeglass <b>102</b> into eyewear <b>100</b> with protection from dust and debris, similar to a goggle. In some embodiments, the gasket retention member <b>106</b> can be part of the eyewear attachment, and the retention member <b>106</b> can be configured to removably couple the eyewear attachment to the eyeglass <b>102</b>. The gasket <b>104</b> can be removed from the eyewear <b>100</b> to convert the eyewear <b>100</b> into an eyeglass <b>102</b> with reduced protection, for example when lateral protection from dust and debris is not needed. Thus, the user can wear the eyewear <b>100</b> in a protective configuration with the gasket <b>104</b> attached to the eyeglass <b>102</b>, and the user can wear the eyewear <b>100</b> in a reduced protective configuration, as the eyeglass <b>102</b> without the gasket <b>104</b>.

The eyeglass <b>102</b> can include a lens <b>108</b> and a frame <b>110</b> configured to position the lens <b>108</b> in a field of view of a wearer. The frame <b>110</b> can include a pair of ear stems <b>112</b><i>a </i>and <b>112</b><i>b</i>. The eyeglass <b>102</b> can also include a nose piece <b>114</b> configured to rest on the nose of a wearer. In some embodiments, the eyeglass <b>102</b> can include a lens retaining member <b>116</b> that can be configured to removably secure the lens <b>108</b> to the frame <b>110</b>, thereby allowing the wearer to interchange the lens <b>108</b> of the eyeglass <b>102</b>. For example, the lens <b>108</b> can be interchanged for a different lens if the lens <b>108</b> become damaged or dirty, and the lens <b>108</b> can be interchanged for a different lens having different optical properties depending on the conditions of use. The lens retaining member <b>116</b> can be configured to retain the lens <b>108</b> on the frame <b>110</b> in the event of impact to the lens <b>108</b> (e.g., a ballistic impact). Additional details relating to the eyeglass <b>102</b> are disclosed in U.S. Patent Publication No. 2011/0194065 (the “'065 Publication”), published on Aug. 11, 2011, and titled “EYEWEAR WITH ENHANCED BALLISTIC RESISTANCE,” the entirety of which is incorporated by reference herein and made a part of this specification for all that it discloses.

The gasket retention member <b>106</b> can be coupled to the frame <b>110</b>, for example, to a brow portion <b>118</b> of the frame <b>110</b>. In some embodiments, the gasket retention member <b>106</b> can be removably attachable to the frame <b>110</b>. The gasket retention member <b>106</b> can include one or more engagement members that are configured to engage corresponding engagement members, or an engagement area, on the frame <b>110</b> to removably secure the gasket retention member <b>106</b> to the frame <b>110</b>. The engagement members can cause engagement by a snap-fit, a friction-fit, a clip, etc. <figref idref="DRAWINGS">FIG. 3</figref> is an isometric view of an example embodiment of a gasket retention member <b>106</b> that includes first and second clips <b>120</b><i>a </i>and <b>120</b><i>b</i>, although in some embodiments, a single clip can be used or other engagement members can be used. <figref idref="DRAWINGS">FIG. 4</figref> shows the underside of the gasket retention member <b>106</b>. The clips <b>120</b><i>a </i>and <b>120</b><i>b </i>can be generally C-shaped and can have curved arms that are shaped to correspond to an engagement area <b>122</b> on the brow portion <b>118</b> of the frame <b>110</b>. <figref idref="DRAWINGS">FIG. 5</figref> shows an isometric view of the gasket retention member <b>106</b> attached to the frame <b>110</b>.

With further reference to <figref idref="DRAWINGS">FIGS. 3 and 4</figref>, the clips <b>120</b><i>a </i>and <b>120</b><i>b </i>can be spaced apart forming a gap <b>124</b> therebetween. A bridge portion <b>126</b> can extend between the clips <b>120</b><i>a </i>and <b>120</b><i>b</i>, and the bridge portion <b>126</b> can be raised above the clips <b>120</b><i>a </i>and <b>120</b><i>b </i>so that the gap <b>124</b> is formed between the clips <b>120</b><i>a </i>and <b>120</b><i>b </i>and between the bridge portion <b>126</b> and the frame <b>110</b>, as can be seen in <figref idref="DRAWINGS">FIG. 6</figref>. The gap can be configured to receive an engagement member of the gasket <b>104</b>, as discussed herein. A tab <b>128</b> can extend upward from the bridge portion <b>126</b>. The gasket retention member <b>106</b> can include a pair of advancing slots <b>130</b><i>a </i>and <b>130</b><i>b </i>positioned, for example, positioned above the clips <b>120</b><i>a </i>and <b>120</b><i>b</i>. In some embodiments, a single advancing slot can be used. The advancing slots <b>130</b><i>a </i>and <b>130</b><i>b </i>can be used to adjust the position of the gasket <b>106</b> relative to the frame <b>110</b>, as discussed herein.

<figref idref="DRAWINGS">FIG. 7</figref> shows a top view of the gasket <b>104</b>. <figref idref="DRAWINGS">FIG. 8</figref> shows a side view of the gasket <b>104</b>. <figref idref="DRAWINGS">FIG. 9</figref> shows an exploded isometric view of the gasket <b>104</b>, and <figref idref="DRAWINGS">FIG. 10</figref> shows another exploded isometric view of the gasket <b>104</b>. The gasket <b>104</b> can include a subframe <b>132</b> and a flange <b>134</b> (also referred to herein as a face flange). The face flange <b>134</b> can have contours that correspond to the face of the wearer so that when the face flange <b>134</b> is pressed against the face of the wearer, the face flange <b>134</b> can create a seal on at least a portion of the perimeter around the face flange <b>134</b>, to substantially prevent dust and debris from passing between the face flange <b>134</b> and the wearer's face. The face flange <b>134</b> can include a flexible and resilient material that can conform to the contours of the wearer's face.

The face flange <b>134</b> can be attached to the subframe <b>132</b>, for example, by an adhesive. The subframe can include a brow portion <b>136</b> that has a front surface that is contoured to correspond to the shape of the back surface of the brow portion <b>118</b> of the frame <b>110</b> of the eyeglass <b>102</b>. Thus, when the gasket <b>104</b> is coupled to the eyeglass <b>102</b> in a closed configuration, the front surface of the brow portion <b>136</b> of the gasket subframe <b>132</b> can abut against the back surface of the brow portion <b>118</b> of the eyeglass frame <b>110</b>, which can create a seal to substantially prevent dust and debris from passing between the gasket subframe <b>132</b> and the eyeglass frame <b>110</b> at the brow portions thereof. The subframe <b>132</b> can include a lens orbital <b>138</b> that is configured to have a shape that generally conforms to the perimeter of the lens <b>108</b>. In some embodiments, when the gasket <b>104</b> is attached to the eyeglass <b>102</b> in a closed configuration, the lens <b>108</b> can abut against the lens orbital <b>138</b> along at least a portion of the perimeter of the lens <b>108</b>, which can create a seal that substantially prevents dust and debris from passing between the lens <b>108</b> and the lens orbital <b>138</b>. In some embodiments, the brow portion <b>136</b> and lens orbital <b>138</b> of the subframe <b>132</b> can be integrally formed of the same material, while in other embodiments, the brow portion <b>136</b> can be formed separately from the lens orbital <b>138</b>, and can be attached thereto (e.g., by an adhesive). In some embodiments, the lens orbital <b>138</b> can be formed from a generally flexible and resilient material. The brow portion <b>136</b> can be formed of the same material as the lens orbital <b>138</b>, or of a more rigid material.

The gasket <b>104</b> can include a gasket engagement member <b>140</b> that is configured to couple the gasket to the eyeglass <b>102</b>. For example, the gasket engagement member <b>140</b> can be configured to engage the gasket retention member <b>106</b> to removably attach the gasket <b>104</b> to the eyeglass <b>102</b>. The gasket engagement member <b>140</b> can include an arm <b>142</b> extending forward from the gasket subframe <b>132</b>, such as from the brow portion <b>136</b> thereof. In some embodiments, the arm <b>142</b> can be integrally formed with some or all of the gasket subframe <b>132</b> (e.g., integrally formed with the brow portion <b>136</b> thereof). In other embodiments, the arm <b>142</b> can be separately formed from the subframe <b>132</b> and attached thereto. In some embodiments, the arm <b>142</b> can be formed of a rigid or semi-rigid material. The arm <b>142</b> can be configured to fit slidably into the gap <b>124</b> shown in <figref idref="DRAWINGS">FIG. 6</figref>.

The arm <b>142</b> can include a pair of prongs <b>144</b><i>a </i>and <b>144</b><i>b </i>extending out from the sides of the arm <b>142</b>. The prongs <b>144</b><i>a </i>and <b>144</b><i>b </i>can be configured to engage the advancing slots <b>130</b><i>a </i>and <b>130</b><i>b </i>on the gasket retention member <b>106</b>. As can be seen in <figref idref="DRAWINGS">FIG. 4</figref>, cutouts <b>146</b><i>a </i>and <b>146</b><i>b </i>can be formed at the back of the slots <b>130</b><i>a </i>and <b>130</b><i>b </i>to provide access for the prongs <b>144</b><i>a </i>and <b>144</b><i>b </i>to enter the slots <b>130</b><i>a </i>and <b>130</b><i>b</i>. When the gasket retention member <b>106</b> is attached to the frame <b>110</b>, the frame can block the cutouts <b>146</b><i>a </i>and <b>146</b><i>b</i>, thereby preventing the prongs <b>144</b><i>a </i>and <b>144</b><i>b </i>from exiting the advancing slots <b>130</b><i>a </i>and <b>130</b><i>b </i>and retaining the gasket <b>104</b> attached to the eyeglass <b>102</b>. Thus, to attach the gasket <b>104</b> to the eyeglass <b>102</b>, the gasket retention member <b>106</b> and the gasket <b>104</b> can first be attached by inserting the prongs <b>144</b><i>a </i>and <b>144</b><i>b </i>through the cutouts <b>146</b><i>a </i>and <b>146</b><i>b </i>and into the advancing slots <b>130</b><i>a </i>and <b>130</b><i>b</i>. Then the gasket retention member <b>106</b> can be attached to (e.g., clipped onto) the frame <b>110</b>, which can block off the cutouts <b>146</b><i>a </i>and <b>146</b><i>b </i>to retain the gasket <b>104</b> onto the eyeglass <b>102</b>.

With reference now to <figref idref="DRAWINGS">FIGS. 11 and 12</figref>, in some embodiments, the eyewear <b>100</b> can have a plurality of ventilation states that produce different amounts of ventilation between the eyewear <b>100</b> and the wearer's face, and the eyewear <b>100</b> can be toggled between the plurality of ventilation states by the wearer. For example, the advancing slots <b>130</b><i>a </i>and <b>130</b><i>b </i>can have one or more detents <b>148</b><i>a </i>and <b>148</b><i>b </i>that separate the advancing slots <b>130</b><i>a </i>and <b>130</b><i>b </i>into a plurality of engagement positions. <figref idref="DRAWINGS">FIGS. 11 and 12</figref> show advancing slots <b>130</b><i>a </i>and <b>130</b><i>b </i>having two detents <b>148</b><i>a </i>and <b>148</b><i>b</i>, thereby defining three engagement positions, but other configurations are also possible. A single detent in each advancing slot <b>130</b><i>a </i>and <b>130</b><i>b </i>can define only two engagement positions, or additional detents can be included to provide additional engagement positions (e.g., four, five, or more engagement positions).

<figref idref="DRAWINGS">FIG. 11</figref> shows the gasket <b>104</b> in a closed position relative to the eyeglass <b>102</b>. In the closed position, the prongs <b>144</b><i>a </i>and <b>144</b><i>b </i>can be advanced to the most forward position in the slots <b>130</b><i>a </i>and <b>130</b><i>b </i>(e.g., forward of the forward detent <b>148</b><i>a</i>), thereby bringing the gasket <b>104</b> forward to abut against the frame <b>110</b> and lens <b>108</b> as discussed herein. In the closed position, the eyewear <b>100</b> can provide a minimum amount of ventilation through the eyewear <b>100</b>. For example, in some embodiments, the eyewear <b>100</b> can be substantially sealed when the gasket <b>104</b> is in the closed position, thereby substantially preventing dust and debris from entering the eyewear <b>100</b>. The arm <b>142</b> can have an end portion <b>150</b>, which in some cases can have a pushing surface <b>152</b> on the front surface thereof. The gasket <b>104</b> can be toggled to an open position by pushing the arm <b>142</b> rearward. For example, the tab <b>128</b> and pushing surface <b>152</b> can be configured to allow a user to use a thumb and finger to pinch the tab <b>128</b> and pushing surface <b>152</b> towards each other (as shown by arrows in <figref idref="DRAWINGS">FIG. 11</figref>). The tab <b>128</b> and pushing surface <b>152</b> can have prominent surfaces to allow the user to toggle the eyewear <b>100</b> to the open configuration while wearing gloves. In some embodiments, the eyewear <b>100</b> can be configured to allow the wearer to toggle the eyewear back to the closed configuration by pressing the eyewear against the wearer's face, which can also be performed reliably and comfortably while wearing gloves.

The arm <b>142</b> can be pushed back so that the prongs <b>144</b><i>a </i>and <b>144</b><i>b </i>are positioned rearward of the back detent <b>148</b><i>b </i>to transition the gasket <b>104</b> in an open position relative to the eyeglass <b>102</b>, as shown in <figref idref="DRAWINGS">FIG. 12</figref>. In the open position, the gasket <b>104</b> can be spaced apart from the eyeglass <b>102</b> to allow air flow through the eyewear <b>100</b>. The open configuration can provide a maximum amount of air flow through the eyewear <b>100</b>. Although not shown in <figref idref="DRAWINGS">FIGS. 11 and 12</figref>, the gasket <b>104</b> can be positioned at an intermediate position by positioning the prongs <b>144</b><i>a </i>and <b>144</b><i>b </i>between the detents <b>148</b><i>a </i>and <b>148</b><i>b</i>. In some embodiments, an intermediate position can provide an intermediate amount of air flow that is greater than the closed position and less than the open position. In some embodiments, the eyewear <b>100</b> can be configured to have only two configurations: open and closed. In other embodiments, the eyewear <b>100</b> can have multiple intermediate configurations to provide various different amounts of air flow.

<figref idref="DRAWINGS">FIG. 13</figref> shows a cross-sectional view of the eyewear <b>100</b> in the closed configuration of <figref idref="DRAWINGS">FIG. 11</figref>. The brow portion <b>136</b> of the gasket subframe <b>132</b> can abut against the brow portion <b>118</b> of the frame <b>110</b>, and the lens <b>108</b> can abut against the lens orbital <b>138</b> of the subframe <b>132</b>, thereby substantially sealing off air flow between the gasket <b>104</b> and the eyeglass <b>102</b>. <figref idref="DRAWINGS">FIG. 14A</figref> shows a cross-sectional view of the eyewear <b>100</b> in the open configuration of <figref idref="DRAWINGS">FIG. 12</figref>. The brow portion <b>136</b> of the gasket subframe <b>132</b> can be displaced rearward from the brow portion <b>118</b> of the frame <b>110</b>, thereby opening an air vent at the top of the eyewear <b>100</b>, and the lens orbital <b>138</b> can be displaced away from the lens <b>108</b> at the outer portions of the eyewear <b>100</b>, thereby opening air vents at the bottom and side portions of the eyewear <b>100</b>. The open configuration can produce a chimney effect that allows hot, moist air to escape (e.g., through the top), which can be replenished by fresh air (e.g., received into the eyewear <b>100</b> from the sides and bottom). The air can flow across the inside surface of the lens <b>108</b>, and the air can exit the eyewear <b>100</b> out the top, as shown by the arrows in <figref idref="DRAWINGS">FIG. 14A</figref>. The air flow through the eyewear <b>100</b> can remove moisture and rapidly defog the lens <b>108</b>. The air flow through the eyewear <b>100</b> can prevent the lens <b>108</b> from fogging, or can improve the fogging resistance of the eyewear <b>100</b>.

As can be seen in <figref idref="DRAWINGS">FIG. 14A</figref>, the subframe <b>132</b> can deform when eyewear <b>100</b> is transitioned from the closed configuration (as shown in <figref idref="DRAWINGS">FIG. 13</figref>) to the open configuration (as shown in <figref idref="DRAWINGS">FIG. 14A</figref>). The deformation of the subframe <b>132</b> can cause the air vent at the bottom of the eyewear <b>100</b> to open wider, than if the subframe <b>132</b> didn't deform. As can be seen, in <figref idref="DRAWINGS">FIGS. 8 and 11</figref>, for example, the arm <b>142</b> can be curved gradually, and the advancing slots <b>130</b><i>a </i>and <b>130</b><i>b </i>can have a gradual curvature that corresponds to the curvature of the arm <b>142</b>. The curvature of the arm <b>142</b> and slots <b>130</b><i>a </i>and <b>130</b><i>b </i>can facilitate the deformation of the subframe <b>132</b> for widening the bottom air vents in the open configuration. Due to the curvature of the arm <b>142</b> and the slots <b>130</b><i>a </i>and <b>130</b><i>b</i>, as the arm is driven rearward to the open position, the brow portion <b>136</b> of the subframe <b>132</b> is driven downward as it opens (e.g., compare the brow portion <b>136</b> position in <figref idref="DRAWINGS">FIG. 13</figref> (closed configuration) to <figref idref="DRAWINGS">FIG. 14A</figref> (open configuration)). Driving the brow portion <b>136</b> downward can cause the lens orbital <b>138</b> to buckle at the sides and deform. In some embodiments, the nose piece <b>114</b> can couple the subframe to the lens at the nose or central, lower portion of the eyewear <b>100</b>. Thus, the nose piece <b>114</b> can prevent the central, lower portion of the subframe <b>132</b> from displacing downward or rearward as the brow portion <b>136</b> is driven downward and rearward, thereby facilitating the deformation of the subframe <b>132</b> at the side portions thereof. In some embodiments, the subframe <b>132</b> does not substantially deform when transitioned between the open state and the closed state. The subframe <b>132</b> (e.g., a substantially rigid, non-deforming subframe <b>132</b>) can articulate when moved between the open state and the closed state. For example, in some embodiments, subframe <b>132</b> can pivot about the nose portion or interface between the subframe <b>132</b> and the lower edge or portion of the lens <b>108</b> when moved between the open state and the closed state.

In some embodiments, the eyewear <b>100</b> can provide for filtered ventilation. For example, in <figref idref="DRAWINGS">FIG. 14B</figref>, a filter <b>101</b> can be positioned between at least a portion of the gap between the eyeglass <b>102</b> and the gasket <b>104</b> when the gasket <b>104</b> is open. The filter <b>101</b> can be an air-permeable material, such as an open-cell foam. In some embodiments, the filter <b>101</b> can allow air to pass through while blocking dust and debris from entering the eyewear <b>100</b>. The filter <b>101</b> can be coupled (e.g., adhered) to one or both of the eyeglass <b>102</b> and the gasket <b>104</b> to position the filter between the gasket <b>104</b> and the eyeglass <b>102</b>. In some embodiments, the filter <b>101</b> can extend between the frame <b>110</b> of the eyeglass <b>102</b> and the subframe <b>132</b> of the gasket <b>104</b>, although the filter <b>101</b> can also extend between other portions of the eyewear <b>100</b> (e.g., between the lens <b>108</b> and the subframe <b>132</b>). Although <figref idref="DRAWINGS">FIG. 14B</figref> shows the filter <b>101</b> extending only along an upper opening, the filter <b>101</b> can extend across a majority or a substantial entirety of the opening between the eyeglass <b>102</b> and the gasket <b>104</b>. In some embodiments, the filter <b>101</b> can be compressible, so that when the gasket <b>104</b> is advanced to the closed position, the filter <b>101</b> can be compressed between the eyeglass <b>102</b> and the gasket <b>104</b>. In some embodiments, the filter <b>101</b> can be flexible (e.g., so that it can fold when the gasket <b>104</b> is advance to the closed position).

Many modifications can be made to the eyewear <b>100</b>. For example, the gasket can be attachable to the eyeglass in various suitable manners. <figref idref="DRAWINGS">FIG. 15A</figref> shows an isometric view of an example embodiment of eyewear <b>200</b>, which can include features similar to, or the same as, the eyewear <b>100</b> or the other eyewear embodiments discussed herein. <figref idref="DRAWINGS">FIG. 15B</figref> shows an exploded isometric view of the eyewear <b>200</b>. The eyewear <b>200</b> can include an eyeglass <b>202</b> and a gasket <b>204</b> (also referred to herein as an eyewear attachment). The eyeglass <b>202</b> can include a frame <b>210</b>, which can include a pair of ear stems <b>212</b><i>a </i>and <b>212</b><i>b</i>, and the frame <b>210</b> can support at least one lens <b>208</b> in front of the wearer's eyes. The eyeglass <b>202</b> can also include a nose piece <b>214</b>. A gasket retention member <b>206</b> can be attached to the brow portion <b>218</b> of the eyeglass frame <b>210</b> and can be configured to couple the gasket <b>204</b> to the eyeglass <b>202</b> (e.g., to the frame <b>210</b>). The gasket <b>204</b> and/or the gasket retention member <b>206</b> can enable the gasket <b>204</b> to be removably attached to the eyeglass <b>202</b>. Thus, the eyeglass <b>202</b> can be configured to be worn without the gasket <b>204</b> (e.g., in conditions in which dust and debris are not present), and the gasket <b>204</b> can be attached to the eyeglass <b>202</b> to provide a seal against at least a portion of the face of the wearer (e.g., in conditions in which dust or debris are present). As discussed herein, the gasket <b>204</b> and/or the gasket retention member <b>206</b> can be configured to allow the gasket <b>204</b> to toggle between a closed configuration and an open configuration.

<figref idref="DRAWINGS">FIG. 15C</figref> shows an isometric view of the gasket retention member <b>206</b>. <figref idref="DRAWINGS">FIG. 15D</figref> shows the gasket retention member <b>206</b> attached to an engagement area <b>222</b> on the brow portion <b>218</b> of the frame <b>210</b>. The gasket retention member <b>206</b> can be configured to clip onto a brow portion <b>218</b> of an eyeglass frame <b>210</b>, for example, using clips <b>220</b><i>a </i>and <b>220</b><i>b</i>, similar to the eyewear <b>100</b>. The clips <b>220</b><i>a </i>and <b>220</b><i>b </i>can be spaced apart forming a gap <b>224</b> therebetween. A bridge portion <b>226</b> can extend between the clips <b>220</b><i>a </i>and <b>220</b><i>b</i>. The gasket retention member <b>206</b> can include one or more prongs <b>244</b><i>a </i>and <b>244</b><i>b</i>, which can extend inwardly into the gap <b>224</b>.

<figref idref="DRAWINGS">FIG. 15E</figref> is a side view of the gasket <b>204</b>. <figref idref="DRAWINGS">FIG. 15F</figref> is a detailed isometric view of the gasket engagement member <b>240</b> of the gasket <b>204</b>. <figref idref="DRAWINGS">FIG. 15G</figref> is an exploded isometric view of the gasket <b>204</b>. The gasket <b>204</b> can include a subframe <b>232</b> and a flange <b>234</b>, similar to the gasket <b>104</b> discussed above. The subframe can include a brow portion <b>236</b> that has a front surface that is contoured to correspond to the shape of the back surface of the brow portion <b>218</b> of the frame <b>210</b> of the eyeglass <b>202</b>. The subframe <b>232</b> can include a lens orbital <b>238</b> that is configured to have a shape that generally conforms to the perimeter of the lens <b>208</b>.

The gasket engagement member <b>240</b> can be configured to couple the gasket <b>204</b> to the eyeglass <b>202</b>. For example, the gasket engagement member <b>240</b> can be configured to engage the gasket retention member <b>206</b> to removably attach the gasket <b>204</b> to the eyeglass <b>202</b>. The gasket engagement member <b>240</b> can include an arm <b>242</b> extending forward from the gasket subframe <b>232</b>, such as from the brow portion <b>236</b> thereof. In some embodiments, the arm <b>242</b> can be integrally formed with some or the entire gasket subframe <b>232</b> (e.g., integrally formed with the brow portion <b>236</b> thereof). In other embodiments, the arm <b>242</b> can be separately formed from the subframe <b>232</b> and attached thereto. In some embodiments, the arm <b>242</b> can be formed of a rigid or semi-rigid material.

The arm <b>242</b> can include a pair of advancing slots <b>230</b><i>a </i>and <b>230</b><i>b </i>configured to engage the prongs <b>244</b><i>a </i>and <b>244</b><i>b </i>of the gasket retention member <b>206</b>. The advancing slots <b>230</b><i>a </i>and <b>230</b><i>b </i>can include one or more detents <b>248</b> configured to separate the advancing slots <b>230</b><i>a </i>and <b>230</b><i>b </i>into two or more portions. For example, as shown in <figref idref="DRAWINGS">FIG. 15F</figref>, a single detent <b>248</b> can divide the advancing slot <b>230</b><i>b </i>into a front portion and a rear portion. A different number of detents (e.g., 2, 3, 4, or more detents) can be used than as shown in the Figures, and a different number of prongs and corresponding slots can be used than the two prongs <b>244</b><i>a </i>and <b>244</b><i>b </i>and two slots <b>230</b><i>a </i>and <b>230</b><i>b </i>shown in the Figures. For example, in some embodiments, a single slot can be used to engage a single prong.

The at least one detent <b>248</b> can enable the gasket engagement member <b>240</b> to toggled between multiple configurations providing different amounts of air flow, as discussed herein. In some embodiments, a single detent <b>248</b> can be used to define two configurations: a closed configuration (as shown in <figref idref="DRAWINGS">FIG. 15H</figref>) and an open configuration (as shown in <figref idref="DRAWINGS">FIG. 15I</figref>). In the closed configuration, the gasket <b>204</b> can be advanced forward so that the prongs <b>244</b><i>a </i>and <b>244</b><i>b </i>are positioned rearward of the detents <b>248</b>. A wearer can press the arm <b>242</b> rearward (e.g., by pressing on the pushing surface <b>252</b> of the arm <b>242</b>) to toggle the eyewear <b>200</b> to the open configuration, separating at least a portion of the gasket <b>204</b> from the eyeglass <b>202</b> to increase air flow through the eyewear <b>200</b>, as discussed herein. In the open configuration, the prongs <b>244</b><i>a </i>and <b>244</b><i>b </i>can be positioned forward of the detent <b>248</b>. Many other variations are possible. For example, in some embodiments, the gasket retention member <b>206</b> can be integrally formed with the eyeglass frame <b>210</b>.

In operation, the wearer can toggle the eyewear <b>200</b> to the open configuration by pressing the engagement member <b>240</b> (e.g., the arm <b>242</b>) generally rearward (e.g., rearward and downward), which can cause the gasket <b>204</b> to move rearward relative to the frame <b>210</b>. In some embodiments, the gasket <b>204</b> can abut against the face of the wearer, and pressing the arm <b>242</b> can cause the frame <b>210</b> to move forward away from the face of the wearer as the eyewear <b>200</b> changes to the open configuration. To toggle the eyewear <b>200</b> to the closed configuration, the user can press the eyeglass <b>202</b> (e.g., the frame <b>210</b> or the lens <b>208</b>) rearward (e.g., posteriorly, towards the face of the wearer). The force on the eyeglass <b>202</b> can cause the engagement between the engagement member <b>240</b> and the retention member <b>206</b> to transition from an open position to a closed position. The gasket <b>204</b> can move forward (e.g., anteriorly) relative to the frame <b>210</b> to close the eyewear <b>200</b>. In some embodiments, the gasket <b>204</b> can abut against the face of the wearer, and pressing the eyeglass <b>202</b> rearward can cause the frame <b>210</b> to move rearward to toggle the eyewear to the closed position. The user can open the eyewear <b>200</b> by pressing on a single location, as well as close the eyewear <b>200</b> by pressing on a single location, as opposed to pinching two objects together, pushing two locations simultaneously, holding one object or portion while moving a different object or portion, etc. Accordingly, the eyewear <b>200</b> can be opened and/or closed with a single hand, with a single hand wearing a glove, and/or with a single hand while holding an object, etc. The wearer does not need to grip anything to open and/or close the eyewear <b>200</b>. This can be advantageous by allowing the wearer to open the eyewear <b>200</b> (e.g., to defog the eyewear) and/or close the eyewear <b>200</b> while the wearer's hands are engaged with other objects (e.g., during a combat situation).

<figref idref="DRAWINGS">FIG. 16</figref> is an isometric view of an example embodiment of eyewear (e.g., a goggle <b>300</b>) configured to have a plurality of ventilation states having different amounts of air flow through the goggle <b>300</b>. <figref idref="DRAWINGS">FIG. 17</figref> is an exploded isometric view of the goggle <b>300</b>. <figref idref="DRAWINGS">FIG. 18</figref> is another exploded isometric view of the goggle <b>300</b>. The goggle <b>300</b> can include a lens <b>302</b>, a frame <b>304</b>, a flange <b>306</b> (also referred to herein as a face flange), and a lens retaining member <b>308</b> configured to toggle the goggle between the plurality of ventilation states. Various features of the eyewear <b>300</b> can be similar to, or the same as, the other eyewear embodiments disclosed herein.

The face flange <b>306</b> can have contours configured to fit to that face of a wearer, and the face flange can include a flexible, resilient material so that the face flange <b>306</b> can conform to the features of the wearer's face. In some embodiments, the face flange <b>306</b> can have a front portion <b>310</b> that is configured to attach to the frame <b>304</b>, such as by an adhesive, a rear portion <b>312</b> that is configured to receive the face of the wearer, and an intermediate portion <b>314</b> extending between the front portion <b>310</b> and the rear portion <b>312</b>. In some embodiments, the intermediate portion <b>314</b> can be vented and/or can include a porous material, such as foam, so that air exchange is permitted through the intermediate portion <b>314</b> of the face flange <b>306</b> even when the goggle <b>300</b> is in the closed configuration. However, in some embodiments, the air flow through the face flange <b>306</b> is insufficient to rapidly defog the lens <b>302</b> of the goggle <b>300</b>. For example, the face flange <b>306</b> can be displaced rearward from the lens <b>302</b> such that air flow from the face flange <b>306</b> does not sufficiently clear air from the area adjacent to the lens <b>302</b>. Accordingly, the goggle <b>300</b> can be configured to allow the lens <b>302</b> to be toggled between multiple positions to provide different amounts of air flow through the goggle <b>300</b> near the lens <b>302</b>, as discussed herein. In some embodiments, the goggle <b>300</b> can be configured to be usable with a prescription eyewear attachment. For example, a prescription eyewear attachment (not shown) can include a prescription lens (or two prescription lenses) which can be mounted onto the goggle <b>300</b> in the wearer's field of view. For example the prescription eyewear attachment can include a subframe, which can include a first attachment portion. The goggle <b>300</b> can include a second, complementary prescription attachment portion <b>313</b> that is configured to engage the first attachment portion on the prescription eyewear attachment to couple the prescription eyewear attachment to the goggle <b>300</b>. The first and second attachment portions on the prescription eyewear attachment and/or the goggle <b>300</b> can include various snap or interference fit features, clip mechanisms, or other attachment mechanisms as would be apparent to one of skill in the art based on the present disclosure.

<figref idref="DRAWINGS">FIG. 19</figref> is an isometric view of an example embodiment of a lens retaining member <b>308</b> that is configured to toggle the lens <b>302</b> between the plurality of positions to provide a plurality of ventilations states having different amounts of air flow through the goggle <b>300</b>. <figref idref="DRAWINGS">FIG. 20</figref> is another view of the lens retaining member <b>308</b>. The lens retaining member <b>308</b> can be configured to movably attach to the frame <b>304</b> so as to be movable between different positions to move the lens <b>302</b> and set the ventilation state of the goggle <b>300</b>. The lens retaining member <b>308</b> can include a clip <b>316</b> that is configured to clip onto the frame <b>304</b>. The clip can include a first arm <b>318</b> extending down the back side of the clip <b>316</b>, and a second arm <b>320</b> extending down the front side of the clip <b>316</b>. The arms <b>318</b> and <b>320</b> can be configured to receive the lens <b>302</b> therebetween and to push the lens <b>302</b> to the different lens positions, as discussed herein. The clip <b>316</b> can be generally C-shaped. The lens retaining member <b>308</b> can have a tab <b>336</b> to allow the user to actuate the lens retaining member <b>308</b> to move the clip <b>316</b> for adjusting the position of the lens <b>302</b>. As discussed elsewhere herein, the tab <b>336</b> can be coupled to the clip <b>316</b> on the back side of the clip <b>316</b>, which can facilitate retention of the lens <b>302</b> in the closed position during a ballistic impact. Gaps <b>364</b><i>a </i>and <b>364</b><i>b </i>can be formed on either side of the clip <b>316</b> between the clip <b>316</b> and the extension arms <b>360</b><i>a </i>and <b>360</b><i>b </i>that extend from the tab <b>336</b> to the junction between the tab <b>336</b> and the clip <b>316</b>.

<figref idref="DRAWINGS">FIG. 21</figref> shows an engagement portion <b>322</b> of the frame <b>304</b>, which can be positioned on a front of the brow portion <b>324</b> of the frame <b>304</b>. The brow portion <b>324</b> of the frame <b>304</b> can extend forward forming an overhang over the top of the lens <b>302</b>. A recess <b>326</b> can be formed in the brow portion <b>324</b> and an engagement bar <b>328</b> can extend across the recess <b>326</b>. The clip <b>316</b> can be configured to clip onto the engagement bar <b>328</b>. A gap can be formed behind the bar <b>328</b> so that the first arm <b>318</b> of the clip <b>316</b> can pass behind the engagement bar <b>328</b>. A clipping portion <b>330</b> of the engagement bar <b>328</b> (e.g., at the central portion thereof) can have a substantially circular cross-sectional shape that corresponds to the shape of the inner surface of the clip <b>316</b> thereby allowing the clip <b>316</b> to rotate about the engagement bar <b>328</b>, as can be seen in <figref idref="DRAWINGS">FIG. 22</figref>, which is a cross-sectional view taken through the clipping portion <b>330</b> of the bar <b>328</b>.

The engagement portion <b>322</b> of the frame <b>304</b> can include positioning features, such as the teeth <b>332</b><i>a </i>and <b>332</b><i>b</i>, that are configured to define a plurality of positions for the lens retaining member <b>308</b>. A pair of lower teeth <b>332</b><i>a </i>can be positioned on the sides or ends of the engagement bar <b>328</b>, and a pair of upper teeth <b>332</b><i>b </i>can be positioned on the sides or ends of the engagement bar <b>328</b>, as shown, although other configurations are possible. For example, a single set of teeth <b>332</b><i>a </i>and <b>332</b><i>b </i>can be used, or a different number of teeth (e.g., one tooth, or three, four, of five teeth) can be used depending on the desired number of lens positions. The lens retaining member <b>308</b> can include positioning features, such as the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b</i>, that are configured to engage the positioning features on the frame <b>304</b>, such as the teeth <b>332</b><i>a </i>and <b>332</b><i>b. </i>

<figref idref="DRAWINGS">FIG. 23A</figref> shows a cross-sectional view of the lens retaining member <b>308</b> in a closed position. <figref idref="DRAWINGS">FIG. 23B</figref> shows a cross-sectional view of the lens retaining member <b>308</b> in an open position. <figref idref="DRAWINGS">FIG. 23C</figref> shows a cross-sectional view of the lens retaining member <b>308</b> in a releasing position. In the closed position shown in <figref idref="DRAWINGS">FIG. 23A</figref>, the hooked arm <b>334</b><i>a </i>can be engaged below the lower tooth <b>332</b><i>a </i>thereby preventing the lens retaining member <b>308</b> from rotating towards the open position. The back arm <b>318</b> of the clip <b>315</b> can abut against the frame <b>304</b>, which can prevent the lens retaining member from rotating further away from the open position. The front arm <b>320</b> can be positioned forward of the lens <b>302</b> to retain the lens <b>302</b> in the closed configuration.

To transition the goggle <b>300</b> to the open configuration (shown in <figref idref="DRAWINGS">FIG. 23B</figref>), the wearer can press upward on the tab <b>336</b> that is attached to the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b</i>, thereby causing the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>to disengage from the lower teeth <b>332</b><i>a </i>to allow the lens retaining member <b>308</b> to rotate from the closed position to the open position. As shown in <figref idref="DRAWINGS">FIG. 23B</figref>, when in the open position, the hooked arm <b>334</b><i>a </i>can be engaged between the teeth <b>332</b><i>a </i>and <b>332</b><i>b</i>, to prevent the lens retaining member <b>308</b> from rotating towards the closed position or towards the releasing position. The lens <b>302</b> can be held in an open configuration between the arms <b>318</b> and <b>320</b>. To transition the goggle <b>300</b> from the open configuration back to the closed configuration, the wearer can press the tab <b>336</b> downward to cause the hooked arm <b>334</b><i>a </i>snap over the lower tooth <b>332</b><i>a</i>. In some cases, the wearer can press on the lens <b>302</b> (e.g., in a rearward direction and/or towards the wearer's face) to toggle the goggle <b>300</b> to the closed configuration. In some cases, the user can press on the front arm <b>320</b> (e.g., in a rearward direction and/or towards the wearer's face) to toggle the goggle <b>300</b> to the closed configuration.

To transition the goggle <b>300</b> to the releasing configuration (shown in <figref idref="DRAWINGS">FIG. 23C</figref>), the wearer can press upward on the tab <b>336</b> to cause the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>to snap over the top tooth <b>332</b><i>b </i>so that the lens retaining member <b>308</b> rotates from the open position to the releasing position. The top tooth <b>332</b><i>b </i>can prevent the lens retaining member <b>308</b> from rotating back towards the open or closed positions. In some embodiments, the lens retaining member <b>308</b> can be prevented from rotating further in the releasing direction than shown in <figref idref="DRAWINGS">FIG. 23C</figref>. The back of the engagement bar <b>328</b> can have a generally circular curvature that allows the lens retaining member <b>308</b> to rotate between the closed, open, and releasing positions. The engagement bar <b>328</b> can include a protrusion <b>338</b> (e.g., on the bottom thereof) that can abut against the back of the lens retaining member <b>308</b> when the lens retaining member <b>308</b> is rotated to the releasing position (shown in <figref idref="DRAWINGS">FIG. 23C</figref>), thereby preventing the lens retaining member <b>308</b> from rotating further in the releasing direction. In some embodiments, the protrusion <b>338</b> can be an additional tooth positioned below the teeth <b>332</b><i>a </i>and <b>332</b><i>b</i>, although the additional tooth <b>338</b> is not configured to engage the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>as are the teeth <b>332</b><i>a </i>and <b>332</b><i>b</i>. When in the releasing position, the back arm <b>318</b> can push the lens <b>302</b> away from the frame <b>304</b>, and in some cases can extend generally orthogonal to the back surface of the lens <b>302</b>. When in the releasing position, the front arm <b>320</b> is not positioned in front of the lens <b>302</b>, and can be positioned above the lens <b>302</b> as shown, so that the lens <b>302</b> can be removed. Thus, to release the lens, the user can toggle the lens retaining member <b>308</b> from the closed position to the open position, and then toggle the lens retaining member from the open position to the releasing position. With the lens retaining member <b>308</b> in the releasing position, the user can remove the lens <b>302</b> from the frame <b>304</b> (e.g., by lifting generally upwardly on the lens <b>302</b> and/or by pulling or pushing the lens <b>302</b> forward). The goggle <b>300</b> can be configured to position the lens <b>302</b> in the field of view of the wearer when the lens <b>302</b> is in the closed, open, and/or releasing positions.

<figref idref="DRAWINGS">FIG. 24</figref> shows another example embodiment of a lens retaining member <b>308</b>″ in a closed position on a goggle <b>300</b>″. <figref idref="DRAWINGS">FIG. 25</figref> shows the lens retaining member <b>308</b>″ in an open configuration. The lens retaining member <b>308</b>″ and other features of the goggle <b>300</b>″ can be similar to the corresponding features on other embodiments disclosed herein (e.g., goggle <b>300</b> and goggle <b>300</b>′). Thus, features of the goggle <b>300</b>″ not specifically discussed can be the same as, or similar to the goggle <b>300</b>, later described goggle <b>300</b>′, and/or other embodiments discussed herein. The lens retaining member <b>308</b>″, and other features described in connection with <figref idref="DRAWINGS">FIGS. 24 and 25</figref>, can be used as alternatives to the lens retaining member <b>308</b>, and other corresponding features, on goggle <b>300</b>. The lens retaining member <b>308</b>″ can be movable (e.g., rotatable) between a closed position (shown in <figref idref="DRAWINGS">FIG. 24</figref>) and an open position (shown in <figref idref="DRAWINGS">FIG. 25</figref>). When the lens retaining member <b>308</b>″ is in the closed position, the lens <b>302</b>″ can be in a closed position (as shown in <figref idref="DRAWINGS">FIG. 24</figref>), and when the lens retaining member <b>308</b>″ is in the open position, the lens <b>302</b>″ can be in the open position (as shown in <figref idref="DRAWINGS">FIG. 25</figref>). The goggle <b>300</b>″ can be configured to position the lens <b>302</b>″ in the field of view of the wearer when the lens <b>302</b>″ is in the closed and open positions.

The lens retaining member <b>308</b>″ can include one or more positioning features (e.g., hooked arm <b>334</b>″) that are configured to engage with one or more corresponding features on the frame (e.g., tooth <b>332</b>″) for positioning the lens retaining member <b>308</b>″. For example, when the lens retaining member <b>308</b>″ is in the closed position, the hooked arm <b>334</b>″ can be disposed on a first side of (e.g., below) the tooth <b>332</b>″ (see <figref idref="DRAWINGS">FIG. 24</figref>). A threshold amount of force can be needed to overcome the engagement between the hooked arm <b>334</b>″ and tooth <b>332</b>″ to cause the lens retaining member <b>308</b>″ to toggle from the closed position to the open position. For example, a sufficient force applied to the tab <b>336</b>″ in an upward direction can cause the hooked arm <b>334</b>″ to disengage from the tooth <b>332</b>″ to allow the lens retaining member <b>308</b>″ to toggle to the open position. When the lens retaining member <b>308</b>″ is in the open configuration, the hooked arm <b>334</b>″ can be positioned on a second side of (e.g., above) the tooth <b>332</b>″ (see <figref idref="DRAWINGS">FIG. 25</figref>). A threshold amount of force can be needed to overcome the engagement between the hooked arm <b>334</b>″ and the tooth <b>332</b>″ to toggle the lens retaining member <b>308</b>″ from the open position to the closed position. As discussed further herein, a sufficient force pushing the lens rearward (e.g., towards the wearer's face) can cause the lens <b>302</b>″ and the lens retaining member <b>308</b>″ to toggle to the closed position. Also, a sufficient force pushing the front arm <b>320</b>″ of the lens retaining member <b>308</b>″ rearward (e.g., towards the wearer's face) can cause the lens retaining member <b>308</b>″ to toggle to the closed position.

In some embodiments, the lens retaining member <b>308</b>″ does not have a dedicated position for releasing the lens <b>302</b>″. In some embodiments, the lens retaining member <b>308</b>″ can deform past the open position (shown in <figref idref="DRAWINGS">FIG. 25</figref>) to permit the lens <b>302</b>″ to be removed. To remove the lens <b>302</b>″, the lens retaining member <b>308</b>″ can be toggled to the open position. The lens <b>302</b>″ can then be removed by pushing the lens forward (e.g., away from the wearer's face) when the lens retaining member <b>308</b>″ is in the open position. The force of the lens <b>302</b>″ pushing forward on the front arm <b>320</b>″ can cause the lens retaining member <b>308</b>″ to elastically deform sufficiently beyond the open position to allow the lens <b>302</b>″ to release from the frame. For example, the deformation can cause the front arm <b>320</b>″ to deflect forward and/or upward from the open position shown in <figref idref="DRAWINGS">FIG. 25</figref>. Once the lens retaining member <b>308</b>″ has deformed sufficiently, the top edge of the lens <b>302</b>″ can pass forward past the front arm <b>320</b>″. In some embodiments, the lens <b>302</b>″ can then be lifted generally upwardly, which can disengage one or more tabs on the lens <b>302</b>″ (e.g., tabs on lower portions or cheek portions of the lens <b>302</b>″, not shown in <figref idref="DRAWINGS">FIGS. 24 and 25</figref>) from corresponding slots in the frame (e.g., slots on lower portions or cheek portions of the frame, not shown in <figref idref="DRAWINGS">FIGS. 24 and 25</figref>).

In some embodiments, the lens <b>302</b>″ is not removable by actuating the lens retaining member <b>308</b>″. This can prevent the lens <b>302</b>″ from being unintentionally released by unintentionally actuating the lens retaining member <b>308</b>″ past the open position to the releasing position. In some embodiments, the tab <b>336</b>″ can abut against or be positioned near a portion of the frame when in the open position, and the portion of the frame can serve as a stop to prevent a force on the tab <b>336</b>″ from actuating the lens retaining member <b>308</b>″ past the open position.

Accordingly, a method of moving the lens to an open position to increase ventilation through the goggle <b>300</b>″ can include pushing the tab <b>336</b>″ (e.g., in a generally upward direction) to move (e.g., rotate) the lens retaining member <b>308</b>″ from the closed position to the open position. The rear arm <b>318</b>″ can push the lens <b>302</b>″ forward to the open position to increase ventilation through the eyewear. Thus, the lens <b>302</b>″ can be opened by pushing on a single location, as opposed to pinching two objects together, pushing two locations simultaneously, holding one object or portion while moving a different object or portion, etc. The lens <b>302</b>″ can be closed by pushing the lens <b>302</b>″ (e.g., rearward) or by pushing the front arm <b>320</b>″ (e.g., rearward). Thus, the lens <b>302</b>″ can be closed by pushing on a single location. Accordingly, the lens <b>302</b>″ can be opened and/or closed with a single hand, with a single hand wearing a glove, and/or with a single hand while holding an object, etc. The wearer does not need to grip anything to open and/or close the lens <b>302</b>″. This can be advantageous by enabling the wearer to increase ventilation (e.g., to defog the eyewear) and/or close the goggle <b>300</b> while the wearer's hands are engaged with other objects (e.g., during a combat situation).

<figref idref="DRAWINGS">FIG. 26</figref> is a side view of the goggle <b>300</b> in the closed configuration. <figref idref="DRAWINGS">FIG. 27</figref> is a cross-sectional view of the goggle <b>300</b> in the closed configuration. In the closed configuration, the lens <b>302</b> can abut against the frame <b>304</b> to create a seal that substantially prevents dust and debris from passing between the lens <b>302</b> and the frame <b>304</b>. In some embodiments, the frame <b>304</b> can include a gasket <b>340</b>, which can be formed of a flexible and resilient material and the gasket <b>340</b> can be configured to facilitate sealing between the lens <b>302</b> and the frame <b>304</b>.

<figref idref="DRAWINGS">FIG. 28</figref> is a side view of the goggle <b>300</b> in the open configuration. <figref idref="DRAWINGS">FIG. 29</figref> is a cross-sectional view of the goggle <b>300</b> in the open configuration. In the open configuration, the at least part of the lens <b>302</b> can be displaced forward from the frame <b>304</b>, thereby allowing air to pass between the lens <b>302</b> and the frame <b>304</b>. The goggle <b>300</b> can create a chimney effect, in which fresh air can enter the goggle <b>300</b> from the bottom and side portions of the goggle <b>300</b> and can exit the goggle <b>300</b> at the top thereof, as shown by the arrows in <figref idref="DRAWINGS">FIG. 29</figref>. The goggle <b>300</b> can be configured to allow the air to enter and exit the goggle <b>300</b> at areas adjacent to the lens <b>302</b> so that air flows through the goggle <b>300</b> near the lens <b>302</b> and can be used to rapidly defog the lens <b>302</b> by flushing humid air out of the goggle <b>300</b>. In some embodiments, the brow portion of the frame <b>304</b> can include one or more openings (e.g., slits <b>335</b>) that allow air to pass upward through the brow portion <b>324</b> as shown in <figref idref="DRAWINGS">FIG. 29</figref>. In some embodiments, the brow portion <b>324</b> can extend forward past the opening formed between the lens <b>302</b> and the frame <b>304</b> when the lens <b>302</b> is in the open position. The brow portion <b>324</b> can protect the goggle <b>300</b> from debris from falling through the vent opening at the top of the goggle <b>300</b>. In some embodiments, the slits <b>335</b> can be omitted so that the brow portion <b>324</b> can provide improved protection from debris entering the goggle <b>300</b>. The openings (e.g., slits <b>335</b>) can be sized such that the goggle <b>300</b> has no openings wider than a threshold size for which a linear line can be drawn from a location outside the goggle <b>300</b>, through the opening, to a location inside the goggle <b>300</b> (e.g., that is behind the frame <b>304</b>). In some embodiments, the threshold size can be less than or equal to about 3 mm, less than or equal to about 2 mm, less than or equal to about 1.5 mm, less than or equal to about 1.0 mm, or less than or equal to about 0.5 mm. For example, the openings (e.g., slits <b>335</b>) can have a width or diameter that is less than or equal to about 3 mm, less than or equal to about 2 mm, less than or equal to about 1.5 mm, less than or equal to about 1.0 mm, or less than or equal to about 0.5 mm. The openings (e.g., slits <b>335</b>) can have a width or diameter that is at least about 0.1 mm, at least about 0.25 mm, at least about 0.5 mm, or at least about 1.0 mm. The openings (e.g., slits <b>335</b>) can be configured such that the openings are in communication with the interior of the goggle <b>300</b> when the lens <b>302</b> is in the open position, and the openings are not in communication with the interior of the goggle <b>300</b> when the lens <b>302</b> is in the closed position. Thus, when the lens <b>302</b> is closed, the openings do not provide venting to the goggle <b>300</b>, and when the lens <b>302</b> is open, the openings do provide ventilation for the goggle <b>300</b>.

In some embodiments, the lens <b>302</b> can pivot about one or more pivot locations (e.g., at the bottom of the lens <b>302</b>) when the lens <b>302</b> moves between the closed, open, and releasing positions. As can be seen in <figref idref="DRAWINGS">FIGS. 17 and 18</figref>, the lens can include pivot tabs <b>342</b><i>a </i>and <b>342</b><i>b</i>, which can be positioned on the lower portion of the lens <b>302</b>, such as at or near the lowest points on the lens <b>302</b>, with one tab <b>342</b><i>a </i>on one side of the lens <b>302</b> and another tab <b>342</b><i>b </i>on the other side of the lens <b>302</b>. The frame <b>304</b> can include slots <b>344</b><i>a </i>and <b>344</b><i>b </i>that are configured to receive the tabs <b>342</b><i>a </i>and <b>342</b><i>b</i>. When the lens <b>302</b> is driven to different locations between the open configuration, the closed configuration, and the releasing configuration, the tabs <b>342</b><i>a </i>and <b>342</b><i>b </i>and remain engaged with the slots <b>344</b><i>a </i>and <b>344</b><i>b</i>, so that the lens <b>302</b> pivots about the interface between the tabs <b>342</b><i>a </i>and <b>342</b><i>b </i>and the slots <b>344</b><i>a </i>and <b>344</b><i>b</i>. The tabs <b>342</b><i>a </i>and <b>342</b><i>b </i>and slots <b>344</b><i>a </i>and <b>344</b><i>b </i>can be shaped so that the tabs <b>342</b><i>a </i>and <b>342</b><i>b </i>engage the slots <b>344</b><i>a </i>and <b>344</b><i>b </i>to secure the lens <b>302</b> to the bottom of the frame <b>304</b> when the lens <b>302</b> is in the closed or open (vented) positions, thereby preventing the lens <b>302</b> from moving vertically upwardly (e.g., in the event of a deformation of the goggle, such as during a ballistic impact). The tabs <b>342</b><i>a </i>and <b>342</b><i>b </i>and slots <b>344</b><i>a </i>and <b>344</b><i>b </i>can be shaped so that the tabs <b>342</b><i>a </i>and <b>342</b><i>b </i>disengage from the slots <b>344</b><i>a </i>and <b>344</b><i>b </i>when the lens <b>302</b> is moved to the releasing position (e.g., forward of the open, vented position) to allow the lens <b>302</b> to be moved upwardly away from the frame <b>304</b> to release the lens <b>302</b>. When pivoted forward to the open configuration, the lens <b>302</b> can be closer to the frame <b>304</b> at the bottom of the lens <b>302</b> and further from the frame <b>304</b> at the top of the lens <b>302</b>. In some cases the air vent area at the top of the lens <b>302</b> can be larger than the air vent area at the bottom and/or sides of the lens <b>302</b>.

In some embodiments, the goggle <b>300</b> can include additional lens retention features and the goggle <b>300</b> can include features that are configured to increase the size of the air vents, e.g., at the sides and/or bottom of the lens <b>302</b>. For example, as shown in <figref idref="DRAWINGS">FIGS. 17 and 18</figref>, the lens <b>302</b> can include tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>positioned at the sides of the lens <b>302</b>. The tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>can be configured to engage grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>that can be formed on the inward facing sides of the frame <b>304</b>. In some embodiments, the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>can be positioned at laterally opposite sides of lens <b>302</b> (e.g., at the temples), and the corresponding grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>can be formed on laterally opposite sides of the frame <b>304</b> (e.g., at the temples). <figref idref="DRAWINGS">FIG. 30</figref> shows a detailed isometric view of the groove <b>348</b><i>b </i>(which can have a similar shape and function as the other groove <b>238</b><i>a</i>). The groove <b>348</b><i>b </i>can include a lower portion <b>350</b> and an upper portion <b>352</b>. When the lens <b>302</b> is in the closed position, the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>can be positioned in the lower positions <b>350</b> of the grooves <b>348</b><i>a </i>and <b>348</b><i>b</i>. The lower portion <b>350</b> of the groove <b>348</b><i>b </i>can be configured to snuggly secure the lens <b>302</b> to reduce or prevent play in the lens <b>302</b> when in the closed position. For example, in some embodiments, the lower portion <b>350</b> of the groove <b>348</b><i>b </i>can be thin enough such that the tab <b>346</b><i>b </i>can fit snuggly therein to reduce or prevent play in the lens <b>302</b> when in the closed position. In some embodiments, the lower portion <b>350</b> of the groove <b>348</b><i>b </i>can be positioned sufficiently rearward to press the lens <b>302</b> snuggly against the gasket <b>340</b> that is disposed between the lens <b>302</b> and the frame <b>304</b>. As the lens <b>302</b> pivots forward to the open position, the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>can slide up the grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>towards the upper portions <b>352</b> thereof. In some embodiments, the grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>can be configured to apply force to the lens <b>302</b> as the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>slide to the upper portions <b>352</b> thereof, thereby causing the lens <b>302</b> to deform when in the open configuration, and the deformation of the lens <b>302</b> can increase the air vent area (e.g., at the sides and/or bottom of the lens <b>302</b>). For example, the upper portions <b>352</b> of the grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>can be positioned further forward than the lower portions <b>350</b> thereof, such that the upper portions <b>352</b> of the grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>can press the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>forward as the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>slide up to the upper portions <b>352</b> of the grooves <b>348</b><i>a </i>and <b>348</b><i>b</i>, thereby deforming the lens <b>302</b> (e.g., by increasing the radius of curvature thereof). In some embodiments, the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>and the grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>can cause substantially no deformation in the lens <b>302</b> when lens <b>302</b> is transitioned between the closed and open positions. The grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>can be longer than the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>so that the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>can slide in the grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>when the lens <b>302</b> moves between the closed and open positions. The upper portions <b>352</b> of the grooves can be further forward than the lower portions <b>350</b> of the grooves such that the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>can move into the upper portions <b>352</b> as the lens <b>302</b> moves forward to the open position without pinching the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>and without substantially deforming the lens <b>302</b>. Because the grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>allow the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>to move forward with the lens <b>302</b> as it moves toward the open position, the grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>can increase the size of the opening between the lens <b>302</b> and the frame (e.g., at the lateral portions of the goggle <b>300</b>), as compared to an embodiment in which the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>are not permitted to slide forward with the lens <b>302</b>. In some embodiments, the tabs <b>346</b><i>a </i>and <b>346</b><i>b </i>and the grooves <b>348</b><i>a </i>and <b>348</b><i>b </i>can be configured to maintain the lens <b>302</b> in the closed position against the frame <b>304</b> in situations where the goggle structure may be deformed (e.g., a ballistic impact or handling by the user).

<figref idref="DRAWINGS">FIG. 31</figref> shows a detailed isometric view of the nose portion of the frame <b>304</b>. <figref idref="DRAWINGS">FIG. 32</figref> shows a cross-sectional view of the nose portion of the frame <b>304</b> and the lens <b>302</b> in an open configuration. The nose portion of the frame <b>304</b> can include one or more openings (e.g., slits <b>354</b>) that extend through the frame <b>304</b>. In the illustrated embodiments, four slits can be formed near the top of the nose arc. As can be seen in <figref idref="DRAWINGS">FIG. 32</figref>, at least a portion of the slits <b>354</b> can be positioned rearward of the lens <b>302</b> when the lens <b>302</b> is in the open configuration, so that air can pass through the slits <b>354</b> and can enter the goggle <b>300</b> behind the lens <b>302</b>. The openings (e.g., slits <b>354</b> can be sized such that the goggle <b>300</b> has no openings wider than a threshold size for which a linear line can be drawn from a location outside the goggle <b>300</b>, through the opening, to a location inside the goggle <b>300</b> (e.g., that is behind the frame <b>304</b>). In some embodiments, the threshold size can be less than or equal to about 3 mm, less than or equal to about 2 mm, less than or equal to about 1.5 mm, less than or equal to about 1.0 mm, or less than or equal to about 0.5 mm. For example, the openings (e.g., slits <b>354</b>) can have a width or diameter that is less than or equal to about 3 mm, less than or equal to about 2 mm, less than or equal to about 1.5 mm, less than or equal to about 1.0 mm, or less than or equal to about 0.5 mm. The openings (e.g., slits <b>354</b>) can have a width or diameter that is at least about 0.1 mm, at least about 0.25 mm, at least about 0.5 mm, or at least about 1.0 mm. The openings (e.g., slits <b>354</b>) can be configured such that the openings are in communication with the interior of the goggle <b>300</b> when the lens <b>302</b> is in the open position, and the openings (e.g., slits <b>354</b> are not in communication with the interior of the goggle <b>300</b> when the lens <b>302</b> is in the closed position. Thus, when the lens <b>302</b> is closed, the openings (e.g., slits <b>354</b>) do not provide venting to the goggle <b>300</b>, and when the lens <b>302</b> is open, the openings (e.g., slits <b>354</b>) do provide ventilation for the goggle <b>300</b>.

The nose portion of the frame <b>304</b> can also include one or more ridges <b>356</b> formed on the top thereof. The ridges <b>356</b> can be configured to reduce the size of openings the lead into the interior of the goggle <b>300</b>. In some embodiments, it can be desirable to eliminate, or minimize the size of, openings in the goggle <b>300</b> through which a linear line can be drawn from a location outside the goggle <b>300</b> to a location inside the goggle <b>300</b> (e.g., that is behind the frame <b>304</b>). Linear openings, like that shown in <figref idref="DRAWINGS">FIG. 33</figref>, can allow shrapnel, flying debris, or other projectiles to enter the goggle <b>300</b>, which can endanger the eyes of the wearer. In some embodiments, the lens <b>302</b> of the goggle <b>300</b> can be spaced apart from the frame <b>304</b> when in the open configuration, thereby creating an opening between the lens <b>302</b> and the frame <b>304</b>. The opening can allow air to pass therethrough for ventilating the goggle <b>300</b>, as discussed herein. In some cases, the openings between the lens <b>302</b> and the frame <b>304</b> can be configured to provide a bent pathway into the goggle <b>300</b>, such that a linear line cannot be drawn from a location outside the goggle <b>300</b>, through the opening, to a location inside the goggle <b>300</b> (e.g., that is behind the frame <b>304</b>), such as, for example, the opening formed at the bottom of the lens <b>302</b> in <figref idref="DRAWINGS">FIG. 29</figref>. In some embodiments, when the goggle <b>300</b> is in the open configuration, the goggle <b>300</b> can include no openings wider than a threshold size for which a linear line can be drawn from a location outside the goggle <b>300</b>, through the opening, to a location inside the goggle <b>300</b> (e.g., that is behind the frame <b>304</b>). In some embodiments, the threshold size can be less than or equal to about 3 mm, less than or equal to about 2 mm, less than or equal to about 1.5 mm, less than or equal to about 1.0 mm, or less than or equal to about 0.5 mm.

As mentioned above, the ridges <b>356</b> on the nose portion of the frame <b>304</b> can be configured to eliminate, or reduce the size of, linear openings into the goggle <b>300</b>. <figref idref="DRAWINGS">FIG. 34</figref> shows a perspective view of the goggle <b>300</b>. <figref idref="DRAWINGS">FIG. 35</figref> shows a detailed view of the nose portion of the goggle <b>300</b> as shown in <figref idref="DRAWINGS">FIG. 34</figref>. <figref idref="DRAWINGS">FIG. 36</figref> shows a detailed view of the nose portion of the goggle <b>300</b> with the ridges <b>356</b> omitted from view. As can be seen in <figref idref="DRAWINGS">FIG. 36</figref>, without the ridges <b>356</b>, an opening <b>358</b> between the frame <b>304</b> and the lens <b>302</b> would provide a linear path into the goggle <b>300</b>. By comparing <figref idref="DRAWINGS">FIGS. 35 and 36</figref>, it can be seen that the ridges <b>356</b> can eliminate, or reduce the size of, linear openings into the goggle <b>300</b>.

In some embodiments, the lens <b>302</b> can be removable from the frame <b>304</b>, so that the lens <b>302</b> can be interchanged with other lenses. <figref idref="DRAWINGS">FIG. 37</figref> shows a side view of the goggle <b>300</b> in the releasing configuration. <figref idref="DRAWINGS">FIG. 38</figref> shows a cross-sectional view of the goggle <b>300</b> in the releasing configuration taken through a plane that intersects the tab <b>342</b><i>a </i>and the slot <b>344</b><i>a</i>. To remove the lens <b>302</b>, the wearer can grip the top portion of the lens <b>302</b> and lift the lens <b>302</b> (as shown by the arrow in <figref idref="DRAWINGS">FIG. 38</figref>) until the tabs <b>342</b><i>a </i>and <b>342</b><i>b </i>disengage from the slots <b>344</b><i>a </i>and <b>344</b><i>b</i>. The lens <b>302</b> can be attached to the frame <b>304</b> by lowering the tabs <b>342</b><i>a </i>and <b>342</b><i>b </i>into the slots <b>344</b><i>a </i>and <b>344</b><i>b </i>and then pivoting the lens <b>302</b> back towards the frame <b>304</b>.

In some embodiments, the goggle <b>300</b> can be impact resistant. For example, the goggle <b>300</b> can be configured to resist ballistic impacts, for example, for combat uses. The lens retaining member <b>308</b> can be configured to retain the lens <b>302</b> onto the frame <b>304</b> in the event of an impact on the lens <b>302</b>. And the lens retaining member <b>308</b> can be configured to maintain the closed lens <b>302</b> in the closed position in the event of an impact on the lens <b>302</b>. With reference to <figref idref="DRAWINGS">FIGS. 19 and 20</figref>, the positioning features (e.g., the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b</i>) that are configured to hold the lens retaining member <b>308</b> in the closed position can be located on the front side thereof (e.g., next to the front arm <b>320</b> of the clip <b>316</b>), and the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>can be coupled to the clip <b>316</b> at on the back side thereof. Extension arms <b>360</b><i>a </i>and <b>360</b><i>b </i>can extend rearward from the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>on the front side of the clip <b>316</b> and can couple to the clip <b>316</b> at junctions <b>362</b><i>a </i>and <b>362</b><i>b </i>on the back side of the clip <b>316</b>. Gaps <b>364</b><i>a </i>and <b>364</b><i>b </i>can extend between the clip <b>316</b> and the extension arms <b>360</b><i>a </i>and <b>360</b><i>b</i>. Coupling the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>to the clip <b>316</b> on the back side thereof can facilitate retention of the lens <b>302</b> in the closed position during in impact on the lens <b>302</b>.

With reference to <figref idref="DRAWINGS">FIG. 39</figref>, an impact on the lens <b>302</b> can cause the lens to rebound, thereby applying a force that pushes against the front arm <b>320</b> of the clip <b>316</b>. If the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>were coupled to the clip <b>316</b> on the front side thereof (e.g., at junction <b>366</b>), the force of the lens rebound <b>302</b> would be transferred into the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>in a forward direction that could push the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>off of the lower tooth <b>332</b><i>a</i>. Thus, if the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>were coupled to the clip <b>316</b> at junction <b>366</b> on the front of the clip <b>316</b>, a lens impact of sufficient force could transition the lens <b>302</b> to the open configuration, or to the releasing configuration, and could cause the lens <b>302</b> to disengage from the frame <b>304</b>.

<figref idref="DRAWINGS">FIG. 40A</figref> shows the lens retaining member <b>308</b> with the junction <b>362</b> positioned rearward of the interface between the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>and the teeth <b>332</b><i>a </i>and <b>332</b><i>b</i>. The junction <b>362</b> can be positioned rearward of the teeth <b>332</b><i>a </i>and <b>332</b><i>b </i>and/or rearward of the engagement bar <b>328</b>. The force of the lens rebound can be transferred through the front arm <b>320</b> of the clip <b>316</b> and to the back side of the clip <b>316</b>, wherein the force can be transferred through the junction <b>362</b> into the extension arms <b>360</b><i>a </i>and <b>360</b><i>b </i>and the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b</i>. Because the force on the hooked arms <b>334</b><i>a </i>and <b>334</b> is directed rearward (e.g., a pulling force from the junction <b>362</b> applied through the rearward extending extension arms <b>360</b><i>a </i>and <b>360</b><i>b</i>), the force of the lens rebound can cause the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>press harder against the engagement bar <b>328</b> to further engage the tooth <b>332</b><i>a</i>, instead of pushing the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>forward as in <figref idref="DRAWINGS">FIG. 39</figref>. Thus, coupling the hooked arms <b>334</b><i>a </i>and <b>334</b><i>b </i>to the back side of the clip <b>316</b> can facilitate retention of the lens <b>302</b> in the closed position in the event of lens impact. In some embodiments, the one or more positioning features (e.g., hooked arms <b>332</b><i>a </i>and <b>332</b><i>b</i>) can be positioned on a first side of the lens retaining member <b>316</b> and the junction <b>362</b> can be positioned on a second side of the lens retaining member <b>316</b> substantially opposite the first side, so that a force transferred through the junction <b>362</b> to the hooked arms <b>332</b><i>a </i>and <b>332</b><i>b </i>causes the hooked arms <b>332</b><i>a </i>and <b>332</b><i>b </i>to further engage the frame <b>304</b> to prevent unintentional opening or release of the lens <b>302</b>.

In some instances, a lens impact can also cause the frame <b>304</b> to deform. In some cases, the brow portion <b>324</b> of the frame can deform by deflecting upward, which can cause the lens <b>302</b> to disengage from the lens retaining member <b>308</b> and/or release from the frame <b>304</b>. In some embodiments, the lens <b>302</b> can includes one or more engagement features that are configured to engage corresponding engagement features on the frame <b>304</b> to prevent or reduce deformation of the frame <b>304</b> and/or facilitate retention of the lens <b>302</b> on the frame <b>304</b> in the event of a lens impact. The engagement features can be positioned on the brow portion <b>324</b> of the frame <b>304</b> and on the upper periphery of the lens <b>302</b>. For example, with reference now to <figref idref="DRAWINGS">FIGS. 17 and 18</figref>, the lens <b>302</b> can include one or more hooks <b>368</b><i>a </i>and <b>368</b><i>b </i>at the periphery of the lens <b>302</b> (e.g., at the top central portion of the periphery of the lens <b>302</b>). The hooks <b>368</b><i>a </i>and <b>368</b><i>b </i>can be configured to engage corresponding engagement surfaces <b>370</b><i>a </i>and <b>370</b><i>b </i>on the brow <b>324</b> of the frame <b>304</b>, so that in the event of a lens impact, deformation of the brow portion <b>324</b> can cause the engagement surfaces <b>370</b><i>a </i>and <b>370</b><i>b </i>to pull on the lens hooks <b>368</b><i>a </i>and <b>368</b><i>b</i>. Coupling the lens <b>302</b> to the brow portion <b>324</b> of the frame <b>304</b> can provide support and added rigidity to the brow portion <b>324</b>, thereby reducing the amount of brow portion deflection during a lens impact. In some cases, upward deflection of the brow portion <b>324</b> can pull the lens <b>302</b> upward as well, thereby preventing the lens from disengaging from the frame <b>304</b>.

In some embodiments, the goggle <b>300</b> can have unfiltered venting when in an open configuration (e.g., venting between the lens <b>302</b> and frame <b>304</b>, or venting at other locations that are not covered or filtered). In some embodiments, the goggle <b>300</b> can include filtered venting (e.g., through the intermediate portion <b>314</b> shown in <figref idref="DRAWINGS">FIGS. 17 and 18</figref>) which can be covered by a filtering material. In some cases the filtered venting can provide venting to the goggle <b>300</b> when the goggle <b>300</b> is in the closed and open positions, and the unfiltered venting can provide venting when the goggle <b>300</b> is open and not when the goggle <b>300</b> is closed. Venting area can refer to the sum of the area of all apertures on the goggle <b>300</b> through which air can pass in or out of the goggle <b>300</b>, without considering the presence or absence of a filtering material. For example, the top of intermediate portion <b>314</b> includes a plurality of distinct apertures separated by struts. The venting area through the intermediate portion <b>314</b> is thus the sum of the area of the individual apertures in intermediate portion <b>314</b>. If a foam material or other filtering material is disposed over the intermediate portion <b>314</b>, the filtering material does not change the amount of venting area of the intermediate portion <b>314</b>. With the filtering material, the venting area of intermediate portion <b>314</b> is considered to be filtered venting area. Venting areas that allow exchange of air without a filtering material are considered unfiltered venting area. For example, in some embodiments, the area between the open lens <b>302</b> and the frame <b>304</b> can allow air to pass in and out of the goggle <b>300</b> without passing through a filtering material, and that area is considered to be unfiltered venting area. Other unfiltered venting areas can be provided, such as by an opening on the frame that can be opened or closed to change the amount of unfiltered venting. When in the open configuration, the goggle <b>300</b> can include an unfiltered venting area of at least about 900 mm², at least about 1000 mm², at least about 1100 mm², at least about 1200 mm², at least about 1230 mm², at least about 1250 mm², or more. The unfiltered venting area of the goggle <b>300</b> in the open configuration can be less than or equal to about 2000 mm², less than or equal to about 1500 mm², less than or equal to about 1300 mm², less than or equal to about 1250 mm², less than or equal to about 1230 mm², or less. The goggle <b>300</b> can have a closed configuration and an open configuration, and the increase of venting area between the closed configuration and the open configuration can be an area of at least about 900 mm², at least about 1000 mm², at least about 1100 mm², at least about 1200 mm², at least about 1230 mm², at least about 1250 mm², or more. In some embodiments, the increase of the venting area between the closed and open configurations can be less than or equal to about 2000 mm², less than or equal to about 1500 mm², less than or equal to about 1300 mm², less than or equal to about 1250 mm², less than or equal to about 1230 mm², or less. In some embodiments, the increased venting area from the closed configuration to the open configuration can be unfiltered venting area, and in some embodiments, the increased venting area from the closed configuration to the open configuration can be filtered venting area. For example, as described in connection with <figref idref="DRAWINGS">FIGS. 40J and 40K</figref>, in some embodiments, some or all of the area between the lens <b>302</b> and the frame <b>304</b> can be filtered when the lens <b>302</b> is in the open position. In some embodiments, the goggle <b>300</b> having the described venting area can still be of a size that is compatible with military night vision systems, and can still be worn with a military helmet. For example, in some embodiments, the volume of the goggle <b>300</b> can include area occupied by the goggle <b>300</b> itself and the area inside the goggle <b>300</b> that is enclosed by an imaginary surface that extends between the rearward edges of the face flange <b>306</b>. The volume of the goggle <b>300</b> can be less than or equal to about 300 cm³, less than or equal to about 250 cm³, less than or equal to about 225 cm³, less than or equal to about 200 cm³, less than or equal to about 175 cm³, less than or equal to 150 cm³, or less. The volume of the goggle <b>300</b> can be at least about 100 cm³, at least about 150 cm³, at least about 175 cm³, at least about 200 cm³, at least about 225 cm³, or more.

<figref idref="DRAWINGS">FIG. 40B</figref> is a front perspective view of an example embodiment of eyewear (e.g., goggle <b>300</b>′). <figref idref="DRAWINGS">FIG. 40C</figref> is a rear perspective view of the goggle <b>300</b>′. <figref idref="DRAWINGS">FIG. 40D</figref> is an exploded perspective view of the goggle <b>300</b>′. The goggle <b>300</b>′ can have various features similar to, or the same as, the goggle <b>300</b>, the goggle <b>300</b>″, and/or other embodiments disclosed herein. Various features disclosed in connection with the other embodiments discussed herein can be incorporated into the goggle <b>300</b>′ even when not specifically discussed herein. Additionally, the features described in connection with the goggle <b>300</b>′ can be incorporated into the goggle <b>300</b>, or into the other embodiments disclosed herein. The goggle <b>300</b>′ can include a frame <b>304</b>′ that supports a lens <b>302</b>′ similar to the goggle <b>300</b> discussed herein. A flange <b>306</b>′ (also referred to herein as a face flange) can extend from the back of the frame <b>304</b>′ and can be configured to conform to the face of a wearer. The goggle <b>300</b>′ can include a lens retaining member <b>308</b>′ for coupling the lens <b>302</b>′ to the goggle frame <b>304</b>′. The goggle <b>300</b>′ can include a prescription attachment portion <b>313</b>′ configured to couple a prescription eyewear attachment (not shown) to the goggle <b>300</b>′. The prescription attachment portion <b>313</b>′ can be similar to the prescription attachment portion <b>313</b> described herein. Various other embodiments disclosed herein (e.g., the goggle <b>300</b>″ can include a prescription attachment portion, which can be similar to the prescription attachment portions <b>313</b> and/or <b>313</b>′).

With reference to <figref idref="DRAWINGS">FIG. 40E</figref>, the frame <b>304</b>′ can include a base member <b>305</b>′, and a covering <b>307</b>′, which, for example, can be overmolded over the base member <b>305</b>′. In some embodiments, the base member <b>305</b>′ can be formed of a rigid or semi-rigid material, and the covering <b>307</b>′ can be formed of a generally flexible material.

The lens retaining member <b>308</b>′ can engage an engagement bar <b>328</b>′ in a manner similar to the goggle <b>300</b>′. In some embodiments, the engagement bar <b>328</b>′ can be separately formed from the frame <b>304</b>′ and coupled to the frame <b>304</b>′ (e.g., using a clip, snap-fit, friction fit, adhesive, or other suitable attachment mechanism). For example, <figref idref="DRAWINGS">FIG. 40F</figref> shows an example embodiment of the engagement bar <b>328</b>′ and the frame base member <b>305</b>′ in a decoupled configuration. The engagement portion <b>322</b>′ of the frame <b>304</b>′ can include engagement members (e.g., recesses <b>323</b><i>a</i>′ and <b>323</b><i>b</i>′), and the engagement bar <b>328</b>′ can include corresponding engagement members that are configured to engage the engagement members on the frame <b>304</b>′ to couple the engagement bar <b>328</b>′ to the frame <b>304</b>′. For example, the engagement bar <b>328</b>′ can include end pieces <b>325</b><i>a</i>′ and <b>325</b><i>b</i>′ that are shaped to correspond to the recesses <b>323</b><i>a</i>′ and <b>323</b><i>b</i>′. The end pieces <b>325</b><i>a</i>′ and <b>325</b><i>b</i>′ can have tapered ends to facilitate insertion of the engagement bar <b>328</b>′ into the engagement portion <b>322</b>′. For example, the end pieces <b>325</b><i>a</i>′ and <b>325</b><i>b</i>′ can be thinner at the top portions thereof and wider at the bottom portions thereof. Although the engagement bar <b>328</b>′ can be integrally formed with the frame <b>304</b>′ (e.g., as in the goggle <b>300</b>), the separately formed engagement bar <b>328</b>′ can be easier to mold than an engagement bar <b>328</b>′ that is integrally formed with the frame <b>304</b>′.

In some embodiments, the engagement bar <b>328</b> can include a pair of teeth <b>332</b>′ configured to engage the lens retaining member <b>308</b>′ in a manner similar to the teeth <b>332</b><i>a </i>and <b>332</b><i>b </i>discussed in connection with the goggle <b>300</b>. In some embodiments, a single tooth can be used instead of the pair of teeth <b>332</b>′. The lens <b>302</b>′ can be toggled between a closed position and an open position, wherein the open position provides more ventilation through the goggle <b>300</b>′ than the closed position. When the lens <b>302</b>′ is in the open position, the lens <b>302</b>′ can be removed from the goggle <b>300</b>′ without toggling the lens retaining member <b>308</b>′ to a separate, lens removal position. The lens <b>302</b>′ can be removed (when in the open position), for example by applying a force to the lens in the forward direction (e.g., by pressing on the back surface of the lens <b>302</b>′ or by inserting one or more fingers around the edges of the lens <b>302</b>′ can pulling the lens <b>302</b>′ forward), which can cause the front arm <b>320</b>′ of the lens retaining member <b>308</b>′ to deform (as discussed below), thereby allowing the lens <b>302</b>′ to slip past the front arm <b>320</b>′ of the lens retaining member <b>308</b>′. Then the lens <b>302</b>′ can be lifted upward to disengage the tabs <b>342</b><i>a</i>′ and <b>342</b><i>b</i>′ from the slots <b>344</b><i>a</i>′ and <b>344</b><i>b</i>′ (which are shown in <figref idref="DRAWINGS">FIG. 40D</figref>). The hooks <b>368</b><i>a</i>′ and <b>368</b><i>b</i>′ on the top of the lens <b>302</b>′ can engage the engagement surfaces <b>370</b><i>a</i>′ and <b>370</b><i>b</i>′ on the frame <b>304</b>′ in a manner similar to that described in connection with the goggle <b>300</b>. In some embodiments, the hooks <b>368</b><i>a</i>′ and <b>368</b><i>b</i>′ can engage the engagement surfaces <b>370</b><i>a</i>′ and <b>370</b><i>b</i>′ when the lens <b>302</b>′ is in both the closed position and the open position. When the lens <b>302</b>′ is forced forward during disengagement, the hooks <b>368</b><i>a</i>′ and <b>368</b><i>b</i>′ can slide off of the front of the engagement surfaces <b>370</b><i>a</i>′ and <b>370</b><i>b</i>′ to facilitate removal of the lens <b>302</b>′.

With further reference to <figref idref="DRAWINGS">FIG. 40F</figref>, the engagement portion <b>322</b>′ of the frame <b>304</b>′ can include an overhang portion <b>327</b>′ positioned over the lens retaining member <b>308</b>′. When the lens retaining member <b>308</b>′ is rotated forward (e.g., to toggle the lens <b>302</b>′ to the open position), the overhang portion <b>327</b>′ can prevent the lens retaining member <b>308</b>′ from rotating further (e.g., past the open position). For example, the tab <b>336</b>′ of the lens retaining member <b>308</b>′ can abut against the underside of the overhang portion <b>327</b>′ to prevent the lens retaining member <b>308</b>′ from rotating past the open position.

<figref idref="DRAWINGS">FIG. 40G</figref> is a perspective view of an example embodiment of the lens retaining member <b>308</b>′. <figref idref="DRAWINGS">FIG. 40H</figref> is a side view of the lens retaining member <b>308</b>′. The lens retaining member <b>308</b>′ can have features similar to, or the same as, the lens retaining member <b>308</b> discussed above. Accordingly, various features of the lens retaining member <b>308</b>′ are not described in detail herein, and the disclosure relating to the lens retaining member <b>308</b> relates to the lens retaining member <b>308</b>′ as well. The lens retaining member <b>308</b>′ includes a back arm <b>318</b>′ and a front arm <b>320</b>′ configured to be positioned on either side of the lens <b>302</b>′ for pushing the lens <b>302</b>′ between the open and closed positions. Hooked arms <b>334</b>′ can be configured to engage the teeth <b>332</b>′ of the engagement bar <b>328</b>′, as described above. When the hooked arms <b>334</b>′ engage the teeth <b>332</b>′, the lens <b>302</b>′ can be held in the closed position (e.g., by the front arm <b>320</b>′). When tab <b>336</b>′ is pressed upward by the user, the hooked arms <b>334</b>′ can disengage from the teeth <b>332</b>′ and the lens retaining member <b>308</b>′ can rotate to the open position (until the tab <b>336</b>′ abuts against the overhang portion <b>327</b>′).

In some embodiments, the hooked arms <b>334</b>′ can be coupled to the arms <b>318</b>′ and <b>320</b>′ at a junction <b>362</b>′ on the back of the lens retaining member <b>308</b>′ to prevent the lens retaining member <b>308</b>′ from unintentionally rotating to the open position in the event of lens impact (e.g., a ballistic impact). In some embodiments, the lens retaining member <b>308</b>′ can includes a locking element <b>331</b>′ that can prevent unintentional rotation of the lens retaining member <b>308</b>′ to the open position. The locking element <b>331</b>′ can be configured to lock the hooked arms <b>334</b>′ against the teeth <b>332</b>′ in the event of a lens impact event. For example, the locking element <b>331</b>′ can be positioned on the front of the front clip <b>320</b>′ such that a locking surface <b>333</b>′ is positioned near the hooked arm <b>334</b>′ on one or both sides of the lens retaining member <b>308</b>′. An impact on the lens can cause the lens <b>302</b>′ to rebound forward, thereby pressing on the front arm <b>320</b>′ of the lens retaining member <b>308</b>′ and causing the front arm <b>320</b>′ to deform and rotate forward. The locking element <b>331</b>′ can rotate along with the front arm <b>320</b>′, which can cause the locking surface <b>333</b>′ to abut against the hooked arm <b>334</b>′ and press the hooked arm <b>334</b>′ against the tooth <b>332</b>′. The stronger the lens <b>302</b>′ is pushed forward, the stronger the locking element <b>331</b>′ presses the hooked arms <b>334</b>′ against the teeth <b>332</b>′, thereby preventing the hooked arms <b>334</b>′ from unintentionally disengaging from the teeth <b>332</b>′.

When in the open position (e.g., with the hooked arms <b>334</b>′ disengaged from the teeth <b>332</b>′ and disposed above the teeth <b>332</b>′), the front arm <b>320</b>′ of the lens retaining member <b>308</b>′ can deform forward sufficiently to allow removal of the lens <b>302</b>′ before the locking element <b>331</b>′ abuts against the hooked arms <b>334</b>′ to prevent further movement of the front arm <b>320</b>′.

The lens <b>302</b>′ can include tabs <b>346</b><i>a</i>′ and <b>346</b><i>b</i>′ disposed at the temporal sides of the lens <b>302</b>′, which can be configured to engage slots <b>348</b><i>a </i>and <b>348</b><i>b </i>in the frame <b>304</b>′ in a manner similar to the goggle <b>300</b>. When the lens <b>302</b>′ is toggled to the open position, the slots <b>348</b><i>a</i>′ and <b>348</b><i>b</i>′ and tabs <b>346</b><i>a</i>′ and <b>346</b><i>b</i>′ can cause the lens <b>302</b>′ to deform in a manner similar to the goggle <b>300</b>. In some embodiments, the slots <b>348</b><i>a </i>and <b>348</b><i>b </i>can be disposed on an upper portion of the temporal side of the frame <b>304</b>′, which can facilitate the deformation of the lens <b>302</b>′ to improve ventilation when the lens <b>302</b>′ is in the open position. For example, with reference to <figref idref="DRAWINGS">FIG. 40I</figref>, the center <b>379</b>′ of the slot <b>348</b><i>b</i>′ can be positioned above the center <b>381</b>′ of the temporal side of the frame <b>304</b>′. In some embodiments, a majority of the slot <b>348</b><i>b</i>′ can be positioned above the center <b>381</b>′ of the temporal side. In some embodiments, substantially the entire slot <b>348</b><i>b</i>′ can be positioned above the center <b>381</b>′ of the temporal side. The slot <b>348</b><i>a</i>′ can be configured similar to the slot <b>348</b><i>b</i>′ that is shown in <figref idref="DRAWINGS">FIG. 40I</figref>.

In some embodiments, the goggle <b>300</b>′ can provide for filtered ventilation. For example, in <figref idref="DRAWINGS">FIG. 40J</figref>, a filter <b>301</b>′ can be positioned between at least a portion of the gap between the frame <b>304</b>′ and the lens <b>302</b>′ when the lens <b>302</b>′ is in the open position. The filter <b>301</b>′ can be an air-permeable material, such as an open-cell foam. In some embodiments, the filter <b>301</b>′ can allow air to pass through while blocking dust and debris from entering the goggle <b>300</b>′. The filter <b>301</b>′ can be coupled (e.g., adhered) to one or both of the frame <b>304</b>′ and the lens <b>302</b>′ to position the filter <b>301</b>′. The filter <b>301</b>′ can extend only along an upper portion of the opening, or the filter <b>301</b>′ can extend across a majority or a substantial entirety of the opening between the frame <b>304</b>′ and the lens <b>302</b>′. In some embodiments, the filter <b>301</b>′ can be compressible, so that when the lens <b>302</b>′ is in the closed position, the filter <b>301</b>′ can be compressed between the frame <b>304</b>′ and the lens <b>302</b>′. As shown in <figref idref="DRAWINGS">FIG. 40J</figref>, the filter <b>301</b>′ can be flexible (e.g., so that it can fold when the lens <b>302</b>′ is moved to the closed position).

<figref idref="DRAWINGS">FIG. 41</figref> is a front perspective view of an example embodiment of eyewear <b>400</b> that includes a removable gasket <b>404</b> (also referred to herein as an eyewear attachment). The eyewear <b>400</b> can include an eyeglass <b>402</b>, and the gasket <b>404</b> can be removably attached to the eyeglass <b>402</b>. <figref idref="DRAWINGS">FIG. 42</figref> shows an exploded front perspective view of the eyewear <b>400</b>, in which the gasket <b>404</b> is disengaged from the eyeglass <b>402</b>. <figref idref="DRAWINGS">FIG. 43</figref> is a rear perspective view of the eyewear, in which the gasket <b>404</b> is attached to the eyeglass <b>402</b>. <figref idref="DRAWINGS">FIG. 44</figref> is an exploded rear perspective view of the eyewear <b>400</b>, in which the gasket <b>404</b> is disengaged from the eyeglass <b>402</b>. Various features of the eyewear <b>400</b> can be similar to, or the same as, the other eyewear embodiments disclosed herein.

The eyeglass <b>402</b> can include a lens <b>408</b> and a frame <b>410</b> configured to position the lens <b>408</b> in the line of sight of a wearer. The eyeglass <b>402</b> can include ear stems <b>412</b><i>a </i>and <b>412</b><i>b </i>and a nose piece <b>414</b> to support the eyeglass <b>402</b> on the wearer's face. Although the eyeglass <b>402</b> is shown having a single lens <b>408</b> that is configured to extend over both eyes of the wearer, the eyeglass <b>402</b> can have two lenses. In some embodiments, the eyeglass <b>402</b> can include a lens retaining member <b>416</b> that can be configured to removably secure the lens <b>408</b> to the frame <b>410</b>, thereby allowing the wearer to interchange the lens <b>408</b> of the eyeglass <b>402</b>. For example, the lens <b>408</b> can be interchanged for a different lens if the lens <b>408</b> become damaged or dirty, and the lens <b>408</b> can be interchanged for a different lens having different optical properties depending on the conditions of use. The lens retaining member <b>416</b> can be configured to retain the lens <b>408</b> on the frame <b>410</b> in the event of impact to the lens <b>408</b> (e.g., a ballistic impact).

The eyeglass <b>402</b> can be configured to be wearable with or without the gasket <b>404</b>. The gasket <b>404</b> can be attached to the eyeglass <b>402</b> to provide improved protection (e.g., from wind, dust, and debris) for the wearer's eyes. With the gasket <b>404</b> attached, the eyewear <b>400</b> can provide reduced ventilation as compared to the eyeglass <b>402</b> worn without the gasket <b>404</b>. In some embodiments, the gasket <b>404</b> can be easily removed from the eyeglass <b>402</b> (e.g., without removal of the eyewear <b>400</b> from the wearer's face). With the gasket <b>404</b> removed, the eyewear <b>400</b> can have increased ventilation as compared to wearing the eyeglass <b>402</b> with the gasket <b>404</b> attached thereto. Thus, the wearer can attach the gasket <b>404</b> when additional protection is desired (e.g., in windy or dusty conditions), and the wearer can quickly remove the gasket <b>404</b> when additional ventilation is desired or when the additional protection is no longer needed. The eyewear <b>400</b> can be useful in various settings, including military settings in which the wearer may experience temporary conditions for which additional eye protection is desirable (e.g., jumping out of an aircraft or a dust storm). When the additional eye protection is no longer needed, the wearer can quickly remove the gasket <b>404</b> while continuing to wear the eyeglass <b>402</b>. Because the gasket <b>404</b> can be removed quickly and with one hand, the wearer can remain focused on other tasks (e.g., on a combat situation) while removing the gasket <b>404</b>. Because the gasket <b>404</b> can be removed without removing the eyeglass <b>402</b>, the eyewear <b>400</b> can provide ballistic protection to the wearer's eyes during the removal of the gasket <b>404</b>.

<figref idref="DRAWINGS">FIG. 45</figref> is a front view of the gasket <b>404</b>. <figref idref="DRAWINGS">FIG. 46</figref> is a side view of the gasket <b>404</b>. The gasket <b>404</b> can include a gasket retention member <b>406</b>, which can be configured to removably couple to the gasket <b>404</b> to the eyeglass <b>402</b> (e.g., to the frame <b>410</b>). The gasket retention member <b>406</b> can include one or more attachment mechanisms (e.g., one or more clips) that are configured to engage corresponding features on the eyeglass <b>402</b>. For example, the gasket retention member <b>406</b> can include clips <b>420</b><i>a </i>and <b>420</b><i>b </i>that can be configured to engage the frame <b>410</b> of the eyeglass <b>402</b> (e.g., at a brow portion <b>418</b> of the frame <b>410</b>). The clips <b>420</b><i>a </i>and <b>420</b><i>b </i>can have curved arms <b>421</b><i>a </i>and <b>421</b><i>b </i>with a shape that corresponds to the shape of an engagement area on the frame <b>410</b> (e.g., on the brow portion <b>418</b> of the frame <b>410</b>). In some embodiments, the clips <b>420</b><i>a </i>and <b>420</b><i>b </i>can be positioned on either side of the lens retaining member <b>416</b> when attached to the eyewear <b>402</b>, for example, such that the lens retaining member <b>416</b> is disposed in a gap <b>425</b> between the clips <b>420</b><i>a </i>and <b>420</b><i>b</i>. In some embodiments, the gasket retention member <b>406</b> can be positioned at the top of the gasket <b>404</b> (e.g., at the center of the gasket <b>404</b>, such as above the brow portion of the gasket <b>404</b>). The clips <b>420</b><i>a </i>and <b>420</b><i>b </i>can extend from the top surface of the subframe <b>432</b>. The arms <b>421</b><i>a </i>and <b>421</b><i>b </i>of the clips <b>420</b><i>a </i>and <b>420</b><i>b </i>can be curved to correspond to the shape of the frame <b>410</b> that is engaged by the gasket retention member <b>406</b>. For example, the arms <b>421</b><i>a </i>and <b>421</b><i>b </i>can have a generally hook shape (e.g., having a first portion extending generally upwardly from the subframe <b>432</b>, a second portion extending generally forward, and a third portion that extends generally downwardly). The first clip <b>420</b><i>a </i>can be positioned on the right side of the gasket <b>404</b> (e.g., above the nasal portion of the right orbital <b>438</b><i>a</i>), and the second clip <b>420</b><i>b </i>can be positioned on the left side of the gasket <b>404</b> (e.g., above the nasal portion of the left orbital <b>438</b><i>b</i>). In some embodiments, clips (or other engagement features) can be positioned elsewhere on the gasket <b>404</b> in addition to, or instead of, the clips <b>420</b><i>a </i>and <b>420</b><i>b</i>. For example, additional clips can be added that engage the brow portion <b>418</b> of the eyeglass frame <b>410</b> at various positions along its length. In some embodiments, clips or other engagement features can be used to removably attach to the lens <b>408</b> (e.g., at the temples or bottom edges of the lens <b>408</b> or at any other suitable location along the periphery of the lens <b>408</b>).

The gasket retention member <b>406</b> can include a grippable portion <b>442</b> (also referred to herein as a grip) that is configured to allow the user to grip the grippable portion <b>442</b> and pull the gasket <b>404</b> generally upwardly to disengage the gasket retention member <b>406</b> from the eyeglass <b>402</b> (e.g., by disengaging the clips <b>420</b><i>a </i>and <b>420</b><i>b </i>from the frame <b>410</b>). The grippable portion <b>442</b> can extend forward from a bridge portion <b>423</b> that extends between the clips <b>420</b><i>a </i>and <b>420</b><i>b</i>, or the grippable portion <b>442</b> can form at least a portion of the bridge portion <b>423</b>. For example, the bridge portion <b>423</b> and/or grippable portion <b>442</b> can extend generally horizontally between the clips <b>420</b><i>a </i>and <b>420</b><i>b </i>(e.g., between the forward portions of the arms <b>421</b><i>a </i>and <b>421</b><i>b</i>). The clips <b>420</b><i>a </i>and <b>420</b><i>b </i>can be spaced apart with an open space forming the gap <b>425</b> between the clips <b>420</b><i>a </i>and <b>420</b><i>b</i>. When the gasket <b>404</b> is attached to the frame <b>410</b> The lens retaining member <b>416</b> can be disposed between the clips <b>420</b><i>a </i>and <b>420</b><i>b </i>in the open space formed by the gap <b>425</b>, thereby properly aligning the gasket <b>404</b> with the frame <b>410</b>. If the frame <b>410</b> does not include specially shaped engagement portions that are configured to receive the clips <b>420</b><i>a </i>and <b>420</b><i>b</i>, the engagement between the gap <b>425</b> and the lens retaining member <b>416</b> can cause the clips <b>420</b><i>a </i>and <b>420</b><i>b </i>to engage the desired portion of the frame <b>410</b> to properly align the gasket <b>404</b> with the frame <b>410</b>. Accordingly, the gasket <b>404</b> can be used with eyeglasses <b>402</b> that have a generally uniform frame shape without specially shaped engagement areas corresponding to the shape of arms <b>421</b><i>a </i>and <b>421</b><i>b</i>. Such gasket <b>404</b> can be especially beneficial in instances where specially shaped engagement areas on a frame are aesthetically undesirable or result in weak spots on the frame (e.g., for thin, indented engagement portions on the frame).

In operation, the user can attach the gasket <b>404</b> (or eyewear attachment) to the eyeglass <b>402</b> by holding the gasket <b>404</b> by the grip <b>442</b> and lowering the gasket <b>404</b> into the space between the eyeglass <b>402</b> and the wearer's face. The gasket <b>404</b> can be lowered until the gasket retention member <b>406</b> contacts the eyeglass <b>402</b> (e.g., the frame <b>410</b>). The user can press downward (e.g., on the grip <b>442</b>) to cause the gasket retentions member <b>406</b> to removably couple to the eyeglass <b>402</b>. For example, the clips <b>420</b><i>a </i>and <b>420</b><i>b </i>can couple to the frame <b>410</b> when the user presses downward to attach the gasket <b>404</b>. Thus, the user can attach the gasket <b>404</b> to the eyeglass <b>420</b> while the eyeglass <b>402</b> is being worn, without removing the eyeglass <b>402</b> from the wearer's face. The user can attach the gasket <b>404</b> to the eyeglass <b>402</b> with only one hand, which can be inside a glove, while the eyeglass <b>402</b> is being worn. In some embodiments, the wearer can remove the eyeglass <b>402</b> from the wearer's face and can attach the gasket <b>404</b> to the eyeglass <b>402</b> while the eyeglass <b>402</b> is not being worn. And the eyeglass <b>402</b> and gasket <b>404</b> together can be placed onto the wearer's face. As discussed herein, to remove the gasket <b>404</b> from the eyeglass <b>402</b>, the wearer can press upward on the grip <b>442</b>. Pressing upward on the grip <b>442</b> can cause the gasket retention member <b>406</b> to decouple from the eyeglass <b>402</b>. For example, the clips <b>420</b><i>a </i>and <b>420</b><i>b </i>can decouple from the frame <b>410</b> when the user presses upward on the grip <b>442</b>. The wearer can hold the grip <b>442</b> and lift the gasket <b>404</b> upward out of the space between the eyeglass <b>402</b> and the wearer's face. Thus, the wearer can remove the gasket <b>404</b> from the eyeglass <b>402</b> with only one hand, which can be inside a glove, while the eyeglass <b>402</b> is being worn, without removing the eyeglass <b>402</b> from the wearer's face. This can be advantageous for enabling the wearer to maintain protection of the eyes while removing the gasket <b>404</b>.

As shown in <figref idref="DRAWINGS">FIG. 47</figref>, when the gasket <b>404</b> is coupled to the eyewear <b>402</b>, the grippable portion <b>442</b> can extend forward past the end of the eyewear <b>402</b> (e.g., past the frame <b>410</b>) by a distance <b>443</b> that allows the user to grip the grippable portion <b>442</b>. The distance <b>443</b> can be at least about 3 mm and/or less than or equal to about 20 mm. The distance <b>443</b> can be at least about 5 mm and/or less than or equal to about 10 mm. In some embodiments, the distance <b>443</b> can be about 7 mm. The grippable portion <b>442</b> can also extend forward past the front of the clips <b>420</b><i>a </i>and <b>420</b><i>b </i>by the distance <b>443</b>. Although a grippable portion <b>442</b> extending forward of the frame <b>410</b> may be aesthetically undesirable for eyewear that is worn for style, the grippable portion <b>442</b> can allow the wearer to remove the gasket <b>404</b> quickly and with one hand. In some embodiments, the gasket retention member <b>406</b> extends no more than about 5 mm, or no more than about 2 mm, or no more than about 1 mm above the top of the frame <b>410</b>. This can enable the eyewear <b>400</b> to be worn with a helmet or other headwear and can facilitate removal of the gasket <b>404</b> while wearing a helmet or other headwear.

In some embodiments, the gasket <b>404</b> can include a nose piece engagement member <b>437</b> that is configured to engage the nose piece <b>414</b>, which can stabilize the attachment of the gasket <b>404</b> to the eyewear <b>402</b>. As can be seen in <figref idref="DRAWINGS">FIG. 45</figref>, the nose piece engagement member <b>437</b> can have an arched projection that extends generally downwardly (e.g., from a bridge portion of the gasket <b>404</b>). With reference to <figref idref="DRAWINGS">FIGS. 48 and 49</figref>, the nose piece <b>414</b> can have a recess <b>439</b> that is configured to receive the nose piece engagement member <b>437</b>. The nose piece <b>414</b> can have a front member <b>441</b> and a rear member <b>445</b>. The front member <b>441</b> can have a groove <b>447</b> for receiving the lens <b>408</b> to secure the nose piece <b>414</b> to the lens <b>408</b>. The front member <b>441</b> can have engagement members <b>449</b> (e.g., tabs) that are configured to engage with engagement members <b>451</b> (e.g., slots) of the rear member <b>445</b>, to couple the front member <b>441</b> to the rear member <b>445</b>. In some embodiments, an adhesive can be used to couple the front member <b>441</b> to the rear member <b>445</b> in addition to or in lieu of the engagement members <b>449</b> and <b>451</b>. The upper portions of the rear member <b>445</b> and the front member <b>441</b> can be spaced apart from each other when the rear member <b>445</b> is coupled to the front member <b>441</b>, thereby forming a recess <b>439</b> therebetween. The recess <b>439</b> can be shaped to receive the nose piece engagement member <b>437</b> therein, as mentioned above. In some embodiments, the rear member <b>445</b> can be formed of a flexible material that that it can conform to the shape of the wearer's nose. In some embodiments, the front member <b>441</b> can be formed of a rigid, or semi-rigid material to facilitate the attachment between the lens <b>408</b> and the nose piece <b>414</b>. In some embodiments, a single-piece nose piece can be used instead of the front and rear members <b>441</b> and <b>445</b> shown.

As can be seen in <figref idref="DRAWINGS">FIG. 45</figref>, the gasket <b>404</b> can include two orbitals <b>438</b><i>a </i>and <b>438</b><i>b </i>corresponding to the wearer's right and left eyes, respectively. In some embodiment, the orbitals <b>438</b><i>a </i>and <b>438</b><i>b </i>can be separately enclosed and can separate the unitary lens <b>408</b> into separately enclosed right-eye and left-eye portions. In some embodiments, the orbitals <b>438</b><i>a </i>and <b>438</b><i>b </i>can be joined to form a unitary opening that surrounds both the right and left eyes. The gasket <b>404</b> can include a subframe <b>432</b>, a flange <b>434</b> (also referred to herein as a face flange) disposed rearward of the subframe <b>432</b>, and a front seal <b>435</b> disposed forward of the subframe <b>432</b>. The subframe <b>432</b> can be formed of a rigid or semi-rigid material (e.g., glass-filled polypropylene or polybutylene terephthalate (PBT)). The face flange <b>434</b> can be formed of a flexible material can be configured to conform to the shape of the wearer's face. The front seal <b>435</b> can be formed of a flexible material and can be configured to abut against the lens <b>408</b> (e.g., the back surface of the lens <b>408</b>) to form a seal between the lens <b>408</b> and at least a portion of the orbitals <b>438</b><i>a </i>and <b>438</b><i>b</i>. In some embodiments, the front seal <b>435</b> can contact the back surface of the lens <b>408</b> at locations that are offset inwardly from the periphery of the lens <b>408</b> (e.g., by a distance of at least about 1 mm and/or less than or equal to about 7 mm). In some embodiments, the flexible material can be a thermoplastic elastomer (TPE) or a self-bonding silicone material. In some embodiments, the front seal <b>435</b> can include right and left portions which can be separated or joined, and which correspond to the right and left orbitals <b>438</b><i>a </i>and <b>438</b><i>b</i>, respectively. In some embodiments, the face flange <b>434</b> can include right and left portions which can be separated or joined, and which correspond to the right and left orbitals <b>438</b><i>a </i>and <b>438</b><i>b</i>, respectively.

In some embodiments, the front seal <b>435</b> can be attached to, or integrally formed with, the face flange <b>434</b>, which can facilitate the securing of the front seal <b>435</b> and face flange <b>434</b> to the subframe <b>432</b>. For example, in some embodiments, the flexible material can extend from the front seal <b>435</b> to the face flange <b>434</b>. In some embodiments, the subframe <b>432</b> can include holes <b>453</b> that extend therethrough. As shown in <figref idref="DRAWINGS">FIG. 51</figref>, the flexible material can extend through the holes <b>453</b> to interconnect the front seal <b>435</b> to the face flange <b>434</b>. In some embodiments, the flexible material can extend around the outside of the subframe <b>432</b> to interconnect the front seal <b>435</b> to the face flange <b>434</b>, as can be seen in <figref idref="DRAWINGS">FIG. 52</figref>. In some embodiments, the front seal <b>435</b> can be separate from the face flange <b>434</b>. In some embodiments, the front seal <b>435</b> and/or the face flange <b>434</b> can be coupled to the subframe <b>432</b> by and adhesive or other attachment mechanism.

In some embodiments, the gasket <b>404</b> can be vented to allow exchange of air between the interior of the eyewear <b>400</b> and the outside area when the gasket <b>404</b> worn attached to the eyeglass <b>402</b>. As shown in <figref idref="DRAWINGS">FIGS. 53 and 54</figref>, the front seal <b>435</b> can have gaps <b>455</b> that allow air to pass between the interior of the eyewear <b>400</b> and the surrounding area. As shown in <figref idref="DRAWINGS">FIG. 53</figref>, the gaps <b>455</b> can be located at the temple portions of the gasket <b>404</b> and/or at the medial or nasal portions of the gasket <b>404</b>. Various other configurations are possible. For example, in some embodiments, the gaps <b>455</b> can be dispersed around the full circumference of the orbitals <b>438</b><i>a </i>and <b>438</b><i>b</i>. In some embodiments, the gasket <b>404</b> can include lower gaps formed on a lower portion of the gasket <b>404</b> (e.g., as gaps in the front seal <b>435</b>) and upper gaps formed on an upper portion of the gasket <b>404</b> (e.g., as gaps in the front seal <b>435</b>) so that the lower gaps and upper gaps cooperate for produce a chimney effect that draws fresh air into the eyewear <b>400</b> from the bottom and expels air from the eyewear <b>400</b> from the top thereof.

The ventilation provided by the gasket <b>404</b> can reduce or prevent fogging on the interior of the eyewear <b>400</b>. As discussed above, the gasket <b>404</b> can be configured to be easily and quickly removable in the event that the ventilation provided by the gaps <b>455</b> is insufficient to prevent fogging. In some embodiments, the front seal <b>435</b> can form a seal between the lens <b>408</b> and a majority of the orbitals <b>438</b><i>a </i>and <b>438</b><i>b </i>(e.g., forming a seal at substantially all portions of the orbital except at the gaps <b>455</b>). For example, the front seal <b>435</b> can form a seal between the lens <b>408</b> and at least about 80%, at least about 90%, or at least about 95% of the orbitals <b>438</b><i>a </i>and <b>438</b><i>b</i>. In some embodiments, the gaps <b>455</b> can cause the front seal <b>435</b> to form a seal between the lens <b>408</b> and less than or equal to about 98%, less than or equal to about 95%, less than or equal to about 93%, or less than or equal to about 90%, of the orbitals <b>438</b><i>a </i>and <b>438</b><i>b</i>. In some embodiments, the face flange <b>434</b> and/or the subframe <b>432</b> can include gaps (not shown) that provide ventilation similar to the gaps <b>455</b> discussed herein.

In some embodiments, the seal between the wearer's face and the gasket <b>404</b> (e.g., the face flange <b>434</b>) can be more important than the seal formed between the lens <b>408</b> and the gasket <b>404</b> (e.g., the front seal <b>435</b>) for protecting the wearer's face from dust and debris. Thus, the front seal <b>435</b> can form a seal between the lens <b>408</b> and the orbitals <b>438</b><i>a </i>and <b>438</b><i>b </i>of less than the values disclosed above. The face flange <b>434</b> can be formed of a flexible material that is configured to conform to the face of the wearer. Although a single orbital can be used in some embodiments, the use of two orbitals <b>438</b><i>a </i>and <b>438</b><i>b </i>with a face flange <b>434</b> having right and left portions that correspond to the two orbitals <b>438</b><i>a </i>and <b>438</b><i>b </i>can facilitate sealing of the gasket <b>404</b> against the wearer's face. For example, the right and left portions of the face flange <b>434</b> can be separately enclosed so that if the seal is compromised for one side, the other side can remain sealed. Also, the use of a face flange <b>434</b> having separate portions for the two orbitals <b>328</b><i>a </i>and <b>438</b><i>b </i>can reduce the occurrence of leakage around the nose portion, as compared to a face flange that extends across a user's nose.

In some embodiments, the subframe <b>432</b>, the face flange <b>434</b>, and/or the front seal <b>435</b> can include an open-cell foam or other porous material that allows air exchange between the interior of the eyewear <b>400</b> and the surrounding area. For example, the venting gaps formed in the face flange <b>434</b>, the subframe <b>432</b>, and/or the front seal <b>435</b> can be covered and/or filled with the open-cell foam or other porous material. In some embodiments, the foam or other material can allow air to pass therethrough while substantially preventing dust or other debris from passing therethrough, thereby providing ventilation while also providing protection from dust and debris. In some embodiments, an anti-fogging coating can be applied to the interior of the eyewear <b>400</b> (e.g., to the eyeglass <b>402</b> and/or to the gasket <b>404</b>) to reduce or prevent moisture fogging. Various types of anti-fogging coatings can be used (e.g., moisture absorption coatings, moisture sheer coatings, coatings based on urethanes, and/or coatings based on treated polysiloxanes).

With reference to <figref idref="DRAWINGS">FIG. 55</figref>, in some embodiments, the eyewear <b>400</b> (and the other eyewear embodiments disclosed herein) can include a leash <b>457</b> that can extend between the ear stems <b>412</b><i>a </i>and <b>412</b><i>b </i>to aid in holding the eyewear <b>400</b> on the wearer. The lease <b>457</b> can include a strap <b>459</b>, which can be adjustable in length. The strap <b>459</b> can be coupled to end pieces <b>461</b>, which can be pivotally attached to the ear stems <b>412</b><i>a </i>and <b>412</b><i>b </i>(e.g., at the rear ends thereof). In some embodiments, the leash <b>457</b> can be configured to hold the eyewear <b>400</b> against the wearer's face such that the wearer's face presses the gasket <b>404</b> against the eyeglass <b>402</b> to facilitate the formation of a seal between the gasket <b>404</b> and the eyewear <b>402</b>. In some embodiments, the gasket <b>404</b> can be configured to seal against the eyewear <b>402</b> without the leash <b>457</b>, and the leash can be omitted.

Although embodiments have been disclosed in the context of certain examples, it will be understood by those skilled in the art that the present inventions extend beyond the specifically disclosed embodiments to other alternative embodiments and/or uses of the inventions and obvious modifications and equivalents thereof. In addition, while several variations of the inventions have been shown and described in detail, other modifications, which are within the scope of these inventions, will be readily apparent to those of skill in the art based upon this disclosure. It is also contemplated that various combinations or sub-combinations of the specific features and aspects of the embodiments may be made and still fall within the scope of the inventions. It should be understood that various features and aspects of the disclosed embodiments can be combined with or substituted for one another in order to form varying modes of the disclosed embodiments.